State v. Gerard , 2016 N.C. App. LEXIS 975 ( 2016 )


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  •               IN THE COURT OF APPEALS OF NORTH CAROLINA
    No. COA15-1014
    Filed: 20 September 2016
    Mecklenburg County, No. 10CRS218127-28, 30, 32, 34
    STATE OF NORTH CAROLINA
    v.
    HEATH TAYLOR GERARD, Defendant
    Appeal by defendant from judgments entered 7 May 2013 and order entered
    20 May 2013 by Judge Yvonne Mims Evans in Superior Court, Mecklenburg County.
    Heard in the Court of Appeals 10 February 2016.
    Attorney General Roy A. Cooper III, by Assistant Attorney General Derrick C.
    Mertz, for the State.
    Tim Fulton Walker & Owen, PLLC, by Melissa Owen, for defendant-appellant.
    STROUD, Judge.
    Defendant appeals an order denying his motion to suppress and judgments
    convicting him of six counts of third degree sexual exploitation of a minor. The trial
    court erred in basing its determination upon the good faith exception under North
    Carolina General Statute § 15A-974 but reached the correct result by denying the
    motion to suppress, since the search warrant application and affidavit provided
    sufficient information for the magistrate to make an independent and neutral
    determination that probable cause existed for the issuance of the warrant which led
    STATE V. GERARD
    Opinion of the Court
    to the search of defendant’s computer and discovery of child pornography. Therefore,
    we affirm.
    I.     Background
    The background of this case was summarized by this Court in State v. Gerard,
    
    233 N.C. App. 599
    , 
    758 S.E.2d 903
    (2014) (unpublished) (“Gerard I”). In summary,
    defendant
    was indicted on 7 June 2010 for six counts of third-degree
    sexual exploitation of a minor. Detective C.E. Perez
    (“Detective Perez”), of the Charlotte–Mecklenburg Police
    Department, obtained a search warrant on 14 April 2010
    to conduct a search of Defendant’s residence. Defendant
    filed a motion on 3 April 2013 to suppress evidence seized
    during the 14 April 2010 search of his residence.
    
    Id. Thereafter, the
    trial court considered defendant’s motion to suppress, and “[i]n
    an order entered on 20 May 2013, the trial court . . . concluded that the good faith
    exception applied and denied Defendant’s motion to suppress. Defendant entered a
    plea of guilty pursuant to Alford decision to six counts of third-degree sexual
    exploitation of a minor. Defendant appeals.” 
    Id. (quotation marks
    omitted).
    This Court dismissed defendant’s appeal because defendant had “failed to give
    notice of his intention to appeal[.]” 
    Id. Thereafter, defendant
    filed a petition for writ
    of certiorari which this Court “allowed for the purpose of reviewing the judgments
    entered 7 May 2013 and the amended order entered 20 May 2013 by Judge Yvonne
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    STATE V. GERARD
    Opinion of the Court
    Mims Evans.     Such review shall be limited to issues related to the denial of
    defendant’s motion to suppress.”
    II.     Motion to Suppress
    Defendant first contends that “the trial court erred in denying Mr. Gerard’s
    motion to suppress on the ground that probable cause existed to issue a search
    warrant.”   (Original in all caps.)      Relying primarily on North Carolina General
    Statutes §§ 15A-244 and 245, defendant argues that the information in the affidavit
    supporting the search warrant application did not include sufficiently detailed facts
    and circumstances to support a determination that probable cause existed for
    issuance of the warrant.
    In ruling upon a motion to suppress evidence, the
    trial court must set forth in the record its findings of fact
    and conclusions of law. The general rule is that the trial
    court should make findings of fact to show the bases of its
    ruling. The standard of review in evaluating the denial of
    a motion to suppress is whether competent evidence
    supports the trial court’s findings of fact and whether the
    findings of fact support the conclusions of law. Conclusions
    of law are reviewed de novo.
    State v. McCrary, 
    237 N.C. App. 48
    , 51–52, 
    764 S.E.2d 477
    , 479–80 (2014) (citations,
    quotation marks, ellipses, and brackets omitted), aff'd in part and remanded, ___
    N.C. ___, 
    780 S.E.2d 554
    (2015).
    Defendant does not challenge the trial court’s findings of fact. The State has
    not presented any proposed issue challenging any of the trial court’s findings of fact
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    STATE V. GERARD
    Opinion of the Court
    as an alternative basis under North Carolina Rule of Appellate Procedure 10(c) to
    affirm the ruling, although the State does note
    that the trial court’s finding of fact [27] regarding the
    sufficiency of the information set forth in the warrant . . .
    is more termed a conclusion of law, and appears to conflict
    with its actual finding of fact regarding a reasonable
    reading as a whole of the facts set forth in the affidavit.
    (Quotation marks and footnote omitted)).
    The trial court’s first 17 findings of fact set forth in detail Detective Perez’s
    extensive training and experience as a police officer and certified computer forensics
    examiner; a description of the Operation Peer Precision internet operation to identify
    child pornography; how SHA1 values are used to identify child pornography files on
    the internet; how Detective Perez identified the particular IP address as sharing
    known child pornography files; his download and review of some of the images and
    comparisons of SHA1 values to confirm that the files were child pornography; his
    identification of the address to which the IP address was registered; and his
    preparation of the search warrant application. Many of the details in findings of fact
    1-17 were based upon Detective Perez’s testimony.
    The remaining findings of fact essentially explain where Detective Perez’s
    affidavit was lacking as compared to his testimony:
    18.   The search warrant application and affidavit of
    probable cause presented to the magistrate on April
    14, 2010, had significantly less detailed information
    than the foregoing 17 Findings of Fact. The
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    STATE V. GERARD
    Opinion of the Court
    application did name the officer applying for the
    warrant and the items to be seized. It described the
    premises to be searched and gave an address for the
    premises. The application suggests that the search
    will produce evidence of the crime of third-degree
    sexual exploitation of a minor as defined in N.C.G.S.
    14-190.17A. The basic requirements for applying for
    the warrant are met.
    19.   The probable-cause affidavit did not describe
    Detective Perez’s training and experience as a
    certified computer forensics examiner or even his
    basic training as a police officer.
    20.   The affidavit never defines "known child
    pornography" or use[s] the statutory language set
    forth in N.C.G.S. 14-190.17A.
    21.   The affidavit does not indicate that Detective Perez
    used Peer Spectre and GnuWatch to identify the
    seventeen files as child pornography. The affidavit
    never says that Perez actually opened any of the
    seventeen files and looked at the images or data. Nor
    does it describe any of the data or images in the
    seventeen files.
    22.   The affidavit does not name the seventeen files or
    their SHA 1 values. It does not say the detective
    actually compared the SHA 1 values of the IP
    address to known child pornography and that they
    were an exact match. The affidavit also fails to
    explain why SHA value comparison is reliable in
    cyber investigations.
    23.   The affidavit does not contain any facts to explain
    the source of Detective Perez’s knowledge relating to
    the SHA values of previously identified child
    pornography.
    24.   However, upon reviewing the affidavit as a whole, a
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    STATE V. GERARD
    Opinion of the Court
    reasonable conclusion can be drawn that the way in
    which Detective Perez knew that the files contained
    known child pornography was by an SHA value
    comparison of the SHA values of "previously
    identified child pornography" and the SHA values of
    the 17 files on Defendant’s computer that were
    alleged child pornography.
    25.    The affidavit goes on to explain that based upon the
    Detective’s training and experience, he knows that
    those who have Internet access often possess
    computers and other devices capable of storing
    electronic media.
    26.    There is no evidence on the face of the application
    for the search warrant that the magistrate sought
    additional information from Detective Perez or that
    he provided any information other than what
    appears on the face of the document.
    Because neither party has challenged any of these findings of fact, even if we
    tend to disagree with the trial court’s description of portions of the affidavit, we must
    accept the findings of fact as true. See Alexvale Furniture v. Alexander & Alexander,
    
    93 N.C. App. 478
    , 481, 
    385 S.E.2d 796
    , 798 (1989) (“It is also the law that a trial
    court’s unchallenged findings of fact are binding upon appeal[.]”) In summary, in its
    previous findings of fact the trial court had determined that, although the trial court
    found that although there was probable cause for issuance of the search warrant, the
    facts necessary to establish probable cause were not present in the affidavit, but
    rather were based upon the more detailed testimony of Detective Perez at the
    hearing. Ultimately in its last “finding of fact,” number 27, which is actually a
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    Opinion of the Court
    conclusion of law, the trial court concluded:
    27.   The Court finds that there was insufficient
    information in the warrant application and the
    Detective’s affidavit from which the magistrate
    could make an independent and neutral
    determination that probable cause existed for the
    issuance of a warrant. However, the Detective acted
    in good faith when he and other officers executed the
    warrant.
    Because the last “finding of fact” is actually a conclusion of law, we will review it
    accordingly. Westmoreland v. High Point Healthcare, Inc., 
    218 N.C. App. 76
    , 79, 
    721 S.E.2d 712
    , 716 (2012) (“The labels findings of fact and conclusions of law employed
    by the trial court in a written order do not determine the nature of our review. If the
    trial court labels as a finding of fact what is in substance a conclusion of law, we
    review that finding de novo.” (citation and quotation marks omitted)).
    We must therefore consider de novo whether the trial court properly concluded,
    based upon its findings of fact, that the search warrant application and affidavit did
    not present sufficient information “from which the magistrate could make an
    independent and neutral determination that probable cause existed for the issuance
    of a warrant.” See 
    McCrary, 237 N.C. App. at 51
    –52, 764 S.E.2d at 479. Our Supreme
    Court has described how we should review issues of this type, noting that the trial
    court’s legal conclusions are “fully reviewable on appeal[:]”
    In so doing, we note that the parties do not challenge the
    superior court’s findings of fact. Therefore, the scope of our
    inquiry is limited to the superior court’s conclusions of law,
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    STATE V. GERARD
    Opinion of the Court
    which are fully reviewable on appeal.
    As this Court acknowledged in State v. Beam, when
    addressing whether a search warrant is supported by
    probable cause, a reviewing court must consider the
    totality of the circumstances. In applying the totality of the
    circumstances test, this Court has stated that an affidavit
    is sufficient if it establishes reasonable cause to believe
    that the proposed search probably will reveal the presence
    upon the described premises of the items sought and that
    those items will aid in the apprehension or conviction of the
    offender. Probable cause does not mean actual and positive
    cause nor import absolute certainty. Thus, under the
    totality of the circumstances test, a reviewing court must
    determine “whether the evidence as a whole provides a
    substantial basis for concluding that probable cause exists.
    In adhering to this standard of review, we are
    cognizant that great deference should be paid a
    magistrate’s determination of probable cause and that
    after-the-fact scrutiny should not take the form of a de novo
    review. We are also mindful that:
    A grudging or negative attitude by reviewing
    courts toward warrants is inconsistent with
    the Fourth Amendment’s strong preference
    for searches conducted pursuant to a warrant;
    courts should not invalidate warrants by
    interpreting affidavits in a hypertechnical,
    rather than a commonsense, manner. The
    resolution of doubtful or marginal cases in
    this area should be largely determined by the
    preference to be accorded to warrants.
    Most importantly, we note that a magistrate is
    entitled to draw reasonable inferences from the material
    supplied to him by an applicant for a warrant. To that end,
    it is well settled that whether probable cause has been
    established is based on factual and practical considerations
    of everyday life on which reasonable and prudent persons,
    not legal technicians, act. Probable cause is a flexible,
    common-sense standard. It does not demand any showing
    that such a belief be correct or more likely true than false.
    A practical, nontechnical probability is all that is required.
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    STATE V. GERARD
    Opinion of the Court
    State v. Sinapi, 
    359 N.C. 394
    , 397–99, 
    610 S.E.2d 362
    , 365 (2005) (citations, quotation
    marks, ellipses, and brackets omitted).
    Defendant insists that Detective Perez’s affidavit did not contain sufficient
    information for a magistrate to determine there was probable cause, and the trial
    court agreed, as it concluded that “there was insufficient information in the warrant
    application and the Detective’s affidavit from which the magistrate could make an
    independent and neutral determination that probable cause existed for the issuance
    of a warrant.” The State argues that “the warrant application was sufficient for both
    probable cause, and thus – under the proper standard of deference – to support the
    magistrate’s issuance of the warrant under the statute.”
    The trial court was correct that Detective Perez’s testimony was more detailed
    than his affidavit, and the additional information makes the existence of probable
    cause entirely clear, but the fact that Detective Perez gave such detailed testimony
    about his law enforcement experience and the forensic computer investigations of
    transmissions of child pornography over the internet does not make his affidavit
    insufficient. The trial court sets the bar a bit too high by requiring such extensive
    and detailed information in a search warrant affidavit. 
    Id. at 398,
    610 S.E.2d at 365
    (“[A]n affidavit is sufficient if it establishes reasonable cause to believe that the
    proposed search probably will reveal the presence upon the described premises of the
    items sought and that those items will aid in the apprehension or conviction of the
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    STATE V. GERARD
    Opinion of the Court
    offender. Probable cause does not mean actual and positive cause nor import absolute
    certainty.”). Our Supreme Court has noted that affidavits must be interpreted in a
    “commonsense” manner and not in a “hypertechnical” manner. 
    Id. The trial
    court’s
    “hypertechnical,” 
    id., interpretation is
    revealed in findings 21 through 23:
    21.    The affidavit does not indicate that Detective Perez
    used Peer Spectre and GnuWatch to identify the
    seventeen files as child pornography. The affidavit
    never says that Perez actually opened any of the
    seventeen files and looked at the images or data. Nor
    does it describe any of the data or images in the
    seventeen files.
    22.    The affidavit does not name the seventeen files or
    their SHA 1 values. It does not say the detective
    actually compared the SHA 1 values of the IP
    address to known child pornography and that they
    were an exact match. The affidavit also fails to
    explain why SHA value comparison is reliable in
    cyber investigations.
    23.    The affidavit does not contain any facts to explain
    the source of Detective Perez’s knowledge relating to
    the SHA values of previously identified child
    pornography.
    Yet in some findings which the trial court relied upon in finding good faith, the
    trial court recognized the common-sense interpretation of the affidavit:
    24.    However, upon reviewing the affidavit as a whole, a
    reasonable conclusion can be drawn that the way in
    which Detective Perez knew that the files contained
    known child pornography was by an SHA value
    comparison of the SHA values of "previously
    identified child pornography" and the SHA values of
    the 17 files on Defendant’s computer that were
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    STATE V. GERARD
    Opinion of the Court
    alleged child pornography.
    25.    The affidavit goes on to explain that based upon the
    Detective’s training and experience, he knows that
    those who have Internet access often possess
    computers and other devices capable of storing
    electronic media.
    Since the SHA1 values are defined and described in detail in the affidavit itself, it is
    obvious from the affidavit how Detective Perez identified the images as child
    pornography, even without the more detailed technical information provided by his
    testimony. The magistrate was “entitled to draw reasonable inferences from the
    material supplied to him by” Detective Perez, and considering the affidavit in light of
    “factual and practical considerations of everyday life on which reasonable and
    prudent persons” act, 
    id. at 399,
    610 S.E.2d at 365, the magistrate could have
    “reasonable cause to believe that the proposed search probably will reveal the
    presence upon the described premises of the items sought and that those items will
    aid in the apprehension or conviction of the offender.” 
    Id. at 398,
    610 S.E.2d at 365.
    The trial court also concluded that “the warrant affidavit was ‘purely
    conclusory’ in stating that probable cause existed.” In support of this conclusion,
    defendant relies primarily upon State v. Campbell, 
    282 N.C. 125
    , 
    191 S.E.2d 752
    (1972), a case also relied upon by the trial court as noted in the order. Campbell does
    not deal with internet pornography but rather with drugs. See 
    id. In Campbell,
    the
    Supreme Court quoted another case in stating, “Probable cause cannot be shown by
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    STATE V. GERARD
    Opinion of the Court
    affidavits which are purely conclusory, stating only the affiant’s or an informer’s
    belief that probable cause exists without detailing any of the underlying
    circumstances upon which that belief is based[.]” 
    Id. at 130-31,
    191 S.E.2d 756
    
    (citation and quotation marks omitted). In Campbell, the affidavit upon which the
    search warrant was based stated that defendant and two others have “on [their]
    premises certain property, to wit: illegally possessed drugs (narcotics, stimulants,
    depressants), which constitutes evidence of a crime, to wit: possession of illegal
    drugs[.]” 
    Id. at 130,
    191 S.E.2d 756
    . The affidavit identified the people who lived in
    the house and stated that “[t]hey all have sold narcotics to Special Agent J. M. Burns
    of the SBI and are all actively involved in drug sales to Campbell College students;
    this is known from personal knowledge of affiant, interviews with reliable
    confidential informants and local police officers.” 
    Id. The Supreme
    Court noted that
    Nowhere in the affidavit is there any statement that
    narcotic drugs were ever possessed or sold in or about the
    dwelling to be searched. Nowhere in the affidavit are any
    underlying circumstances detailed from which the
    magistrate could reasonably conclude that the proposed
    search would reveal the presence of illegal drugs in the
    dwelling. The inference the State seeks to draw from the
    contents of this affidavit—that narcotic drugs are illegally
    possessed on the described premises—does not reasonably
    arise from the facts alleged. Therefore, nothing in the
    foregoing affidavit affords a reasonable basis upon which
    the issuing magistrate could conclude that any illegal
    possession or sale of narcotic drugs had occurred, or was
    occurring, on the premises to be searched.
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    Opinion of the Court
    
    Id. at 131,
    191 S.E.2d at 756.
    The affidavit here is much more detailed than the one in Campbell, and it does
    describe the “underlying circumstances upon which [Detective Perez’s] belief is
    based[.]” 
    Id. at 130-31,
    191 S.E.2d at 756.        Defendant essentially argues that the
    affidavit must go into even more extensive technical detail than it did regarding the
    law enforcement methods and software used to identity and track transmissions of
    child pornography over the internet.      And in his motion to suppress, defendant
    contended that
    for a judicial official to make an independent
    determination about whether the images are likely
    child pornography, the judicial official probably
    must either view the images or receive a detailed
    description of the images that allows the judicial
    official to reach an independent conclusion about the
    content of the images. A statement from the
    applicant that the images “are child pornography” is
    most likely insufficient, as it does not provide factual
    information that the judicial official can use to
    determine probable cause. . . .
    28.    Based on the description as set out in the warrant
    application, it would be impossible for a reasonable
    law enforcement officer to determine that any of the
    files viewed by Det. Perez on December 3, 2009 were
    actually child pornography. Det. Perez did not
    include images, videos, or any other files that could
    have been viewed by the magistrate in order to make
    a determination of probable cause.
    Essentially, defendant argues that identifying the alleged pornographic images as
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    Opinion of the Court
    known child pornography based upon the computer information is not enough -- the
    pictures themselves should be provided with the affidavit. The trial court’s finding
    suggest as much, since the trial court found as one of the affidavit’s deficiencies that
    it “never says that Perez actually opened any of the seventeen files and looked at the
    images or data. Nor does it describe any of the data or images in the seventeen files.”
    They say that a picture is worth a thousand words, and it is true that attaching
    copies of the allegedly pornographic images to the affidavit might make the existence
    of probable cause immediately obvious. But this affidavit described the alleged child
    pornography using methods developed by law enforcement agencies to track known
    images transmitted over the internet, without further harm to the children victimized
    by the creators and consumers of the pornography by republishing the images.1
    Pictures which fall within the legal definition of child pornography can be difficult to
    describe, as Justice Stewart of the United States Supreme Court explained,
    I imply no criticism of the Court, which in those cases was
    faced with the task of trying to define what may be
    indefinable. I have reached the conclusion, which I think is
    confirmed at least by negative implication in the Court’s
    decisions since Roth and Alberts, that under the First and
    Fourteenth Amendments criminal laws in this area are
    constitutionally limited to hard-core pornography. I shall
    not today attempt further to define the kinds of material I
    understand to be embraced within that shorthand
    1  We also note that even if a photograph were attached or described in graphic detail, the
    magistrate would have no way to determine whether the person depicted is a real person or a
    computer-generated image or the person’s age. The photographs identified by SHA1, “a mathematical
    algorithm fingerprint of a computer file[,]” as described in the affidavit, have been “previously
    identified [as] child pornography[.]”
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    Opinion of the Court
    description; and perhaps I could never succeed in
    intelligibly doing so. But I know it when I see it . . . .
    Jacobellis v. Ohio, 
    378 U.S. 184
    , 197, 
    12 L. Ed. 2d 793
    , 803-04 (1964) (Stewart, J.,
    concurring) (emphasis added) (footnotes omitted). Just like Justice Stewart, see 
    id., Detective Perez
    knew it when he saw it as well, according to his testimony, but his
    affidavit also described the use of SHA1 values to identify the images very specifically
    as confirmed child pornography. Detective Perez’s affidavit did not rely solely upon
    his own perception of the images as child pornography but upon SHA1 values of
    known child pornography images.
    The affidavit included detailed definitions of several technical terms as used
    in the affidavit, including “internet,” “IP Address,” “online,” “peer-2-peer networks,”
    “SHA1,” and “Gnutella.” Detective Perez averred that the Charlotte Mecklenburg
    Police Department Cyber Crime Unit had conducted an internet operation “and
    identified a computer at IP address 174.96.87.196 as actively participating in the
    receipt and/or distribution of known child pornography.” “‘Known’ child pornography
    is an image that has been presented to the National Center for Missing and Exploited
    Children and the person in the image has actually been identified and determined to
    be a child.”    Detective Perez was able to identify the images as “known child
    pornography” by the SHA1 values of the images. The affidavit defined SHA1 as an
    algorithm
    developed by the National Institute of Standards and
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    Opinion of the Court
    Technology (NIST), along with the National Security
    Agency (NSA), for use with the Digital Signature Standard
    (DSS) as specified within the Secure Hash Standard (SHS).
    The United States of America has adopted the SHA-1 hash
    algorithm described herein as a Federal Information
    Processing Standard. Basically the SHA1 is an algorithm
    for computing a condensed representation of a message or
    data file like a fingerprint.
    As Detective Perez averred, the IP address “was utilizing a peer to peer file sharing
    program identified as ‘Limewire’ to access and share the files, and that at least 17
    files out of the 100 files that were being shared from the computer located at IP
    address 174.96.87.196 were previously identified as known child pornography.” The
    affidavit noted that “Detective Perez was able to establish a direct connection to the”
    specific IP address, which was later identified by Time Warner Cable as assigned to
    John Doe at 123 Main Street in Charlotte. 2 Using the SHA1 information to identify
    the known images of child pornography eliminated the need to attach copies of the
    images to the affidavit or to present them to the magistrate. Including copies of the
    images themselves would further perpetuate the very harm the statutes regarding
    child pornography were intended to prevent.
    Although it appears North Carolina’s appellate courts have not addressed how
    detailed the information regarding child pornography in a search warrant affidavit
    should be, we find the analysis of similar cases by several federal courts instructive.
    2 We have used a pseudonym for the name of the owner of the house in which defendant resided
    and a false address to protect the identity and safety of the homeowner and other residents of the
    home.
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    The Court of Appeals for the Fourth Circuit addressed a similar case in United States
    v. Wellman, 
    663 F.3d 224
    (4th Cir. 2011), where the defendant argued that
    the search warrant authorizing the search of his home was
    defective, because the warrant application failed to include
    either an exemplar or a description of an image alleged to
    be child pornography. He contends that in the absence of
    such information, the application merely contained the
    officers’ conclusions that the material sought constituted
    child pornography. According to Wellman, this defect in the
    warrant application precluded the reviewing judge from
    making an independent probable cause determination.
    
    Id. at 227-28.
    Although the Wellman court ultimately based its determination upon
    the good faith exception, the court discussed and rejected this contention that the
    images must be included with the affidavit:
    We decline to impose a requirement that a search
    warrant application involving child pornography must
    include an image of the alleged pornography. While the
    inclusion of such material certainly would aid in the
    probable cause determination, we do not impose a fixed
    requirement or a bright-line rule, because law enforcement
    officers legitimately may choose to include a variety of
    information when submitting a search warrant
    application. Instead, when considering the merits of a
    judicial officer’s probable cause determination, we will
    review a search warrant application in its entirety to
    determine whether the application provided sufficient
    information to support the issuance of the warrant.
    
    Id. at 228-29
    (citation omitted). In fact, the United States Supreme Court long ago
    rejected the argument that the “magistrate must personally view allegedly obscene
    films prior to issuing a warrant authorizing their seizure.” New York v. P.J. Video,
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    Opinion of the Court
    Inc., 
    475 U.S. 868
    , 874 n.5 , 
    89 L. Ed. 2d 871
    , 879 n.5 (1986).
    Other courts have also addressed the use of SHA1 values in search warrants
    to identify child pornography which is being transmitted over the internet.
    Traditional physical searches of papers are entirely different from the digital methods
    used to identify information transmitted over the internet, not just in investigations
    of pornography but in many types of investigations:
    Hashing is a powerful and pervasive technique used
    in nearly every examination of seized digital media. The
    concept behind hashing is quite elegant: take a large
    amount of data, such as a file or all the bits on a hard drive,
    and use a complex mathematical algorithm to generate a
    relatively compact numerical identifier (the hash value)
    unique to that data. Examiners use hash values
    throughout the forensics process, from acquiring the data,
    through analysis, and even into legal proceedings. Hash
    algorithms are used to confirm that when a copy of data is
    made, the original is unaltered and the copy is identical,
    bit-for-bit. That is, hashing is employed to confirm that
    data analysis does not alter the evidence itself. Examiners
    also use hash values to weed out files that are of no interest
    in the investigation, such as operating system files, and to
    identify files of particular interest.
    It is clear that hashing has become an important
    fixture in forensic examinations.
    Richard P. Salgado, Fourth Amendment Search and the Power of the Hash, 119
    Harvard Law Review Forum 38, 38 (2006).3
    Overall, courts and judges – who are usually not conversant with the details of
    3 As of 23 August 2016, available at http://federalevidence.com/pdf/2013/02Feb/EE-
    4thAmSearch-Power%20of%20Hash.pdf.
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    digital technology – seem to struggle a bit with reconciling prior cases which
    addressed searches of paper-and-ink documents or tangible objects such as drugs and
    weapons with the most recent methods of digital transmission of documents and the
    highly specialized methods which law enforcement uses to conduct investigations of
    this sort, but this type of internet investigation has been addressed in some cases:
    Here, the magistrate found that the application and
    affidavit: (1) described a method of communication known
    as peer-to-peer (P2P) computer file sharing using the
    worldwide Internet; (2) described how individuals wishing
    to share child pornography use the P2P method to share
    and trade digital files containing images of child
    pornography; (3) described Agent Morral’s experience and
    training in computer usage and investigation of child
    pornography cases; (4) incorporated details of an
    investigation by Agent Cecchini who accessed a P2P file
    designated LimeWire and conducted a search looking for
    users accessing known child pornography sites; (5) stated
    that an IP address traced to Stults was identified as
    accessing child pornography sites; and (6) recounted that
    shared files from Stults’s computer were downloaded and
    reviewed and were identified as containing numerous
    images of child pornography.
    U.S. v. Stults, 
    575 F.3d 834
    , 843–44 (8th Cir. 2009) (citation and quotation marks);
    see, e.g., U.S. v. Pavulak, 
    700 F.3d 651
    , 660-65 (3rd Cir. 2012) (determining the
    affidavit was insufficient to establish probable cause, but good faith applied); U.S. v.
    Miknevich, 
    638 F.3d 178
    , 183 (3rd Cir. 2011) (“Thus, our review of the affidavit leaves
    a clear impression: the state magistrate was presented with an affidavit that provided
    no factual details regarding the substance of the images in question. Although either
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    STATE V. GERARD
    Opinion of the Court
    the actual production of the images, or a sufficiently detailed description of them,
    satisfies the Fourth Amendment’s probable cause requirement, an insufficiently
    detailed or conclusory description cannot. We believe, however, that even given the
    infirmities we highlighted, the affidavit still contained information sufficient to
    permit a finding of probable cause by the magistrate.” (citation omitted)).        For
    example, in U.S. v. Henderson, a similar investigation and affidavit led to the seizure
    of child pornography on the defendant’s computer, and he raised the same arguments
    in challenging the basis for issuance of the search warrant as defendant here. See
    
    595 F.3d 1198
    , 1200 (10th Cir. 2010). The 10th Circuit Court of Appeals noted that
    the affidavit described Special Agent Robert Leazenby’s
    professional background; describes the general protocol
    investigating officers use to identify distributors of child
    pornography, including how officers usually determine
    that a computer at a given IP address has transferred a
    video with a particular SHA value; and states that
    Leazenby “learned” that a computer with the relevant IP
    address had shared videos with child-pornography-related
    SHA values. His affidavit, however, does not identify: (1)
    who informed Leazenby that a computer with the relevant
    IP address had transferred child pornography; or (2) the
    method used in this case to establish that a computer at
    the specified IP address transferred videos with child-
    pornography-associated SHA values.
    
    Id. at 1199-1200
    (footnote omitted). In Henderson, the Court ultimately based its
    ruling upon the good faith exception, since “[t]he government wisely conceded at oral
    argument that Leazenby’s affidavit is insufficient to establish probable cause.
    - 20 -
    STATE V. GERARD
    Opinion of the Court
    Notably, the affidavit fails to identify how Leazenby’s source determined that a
    computer with the relevant IP address—rather than some other computer—shared
    videos with child-pornography-related SHA values.” 
    Id. at 1201-02.
    But here, the affidavit does identify how Detective Perez determined that the
    “computer with the relevant IP address[,]” 
    id., shared the
    child pornography:
    “Detective Perez was able to establish a direct connection to the computer located at
    IP address 174.96.87.196. During this connection Detective Perez determined that
    the computer at IP address 174.96.87.196 was utilizing a peer to peer file sharing
    program identified as ‘Limewire’ to access and share the files[.]” The affidavit also
    stated how Detective Perez had obtained information that “a computer with the
    relevant IP address had transferred child pornography[,]” 
    id., by describing
    his use
    of Operation Peer Precision and the Gnutella network.       Here, the search warrant
    application and affidavit included sufficient information to permit the magistrate to
    make a neutral and independent determination of probable cause for the issuance of
    a warrant; we determine that the trial court erred in concluding otherwise.
    The trial court also concluded that “[t]he ‘good faith’ exception applies in this
    case and therefore the evidence will not be suppressed.” Defendant argues that the
    trial court erred in finding the good faith exception applicable, but we need not
    address this argument since we have determined that the trial court erred in its
    conclusion that the affidavit was not sufficient to support a determination of probable
    - 21 -
    STATE V. GERARD
    Opinion of the Court
    cause. While the trial court’s reliance on good faith was misplaced, it ultimately came
    to the correct determination in denying defendant’s motion to suppress, and
    therefore, we affirm the order. See Shore v. Brown, 
    324 N.C. 427
    , 428, 
    378 S.E.2d 778
    , 779 (1989) (“If the correct result has been reached, the judgment will not be
    disturbed even though the trial court may not have assigned the correct reason for
    the judgment entered.”). This argument is overruled.
    III.    Conclusion
    Because we have determined probable cause was established in the search
    warrant application and affidavit, we need not address defendant’s argument
    regarding good faith. Although the trial court erred in relying upon good faith as the
    basis for denial of defendant’s motion to suppress, since the affidavit was sufficient
    to support the magistrate’s determination of probable cause for issuance of the search
    warrant, we affirm.
    AFFIRMED.
    Judges ELMORE and DIETZ concur.
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