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Ruby Examples

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(Ruby) P7S - Access Signature Information (date/time, certificate used, etc.)

Examine a PKCS7 signature (.p7s) and get information about it. Note: This example requires Chilkat v9.5.0.75 or greater.

Chilkat Ruby Downloads

Ruby Library for Linux and MAC OS X

require 'chilkat'

# This requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# First load the .p7s file into a BinData object..
bd = Chilkat::CkBinData.new()
success = bd.LoadFile("qa_data/p7s/sample.p7s")
if (success != true)
    print "Failed to load .p7s file." + "\n";
    exit
end

# IMPORTANT:  This example requires Chilkat v9.5.0.75 or greater.
crypt = Chilkat::CkCrypt2.new()

# Assuming this is a signature that contains the original data that was signed..
success = crypt.OpaqueVerifyBd(bd)
if (success != true)
    print crypt.lastErrorText() + "\n";
    exit
end

# Examine the LastJsonData after signature verification..
# json is a CkJsonObject
json = crypt.LastJsonData()
json.put_EmitCompact(false)
print json.emit() + "\n";

# --
# IMPORTANT:  This example requires Chilkat v9.5.0.75 or greater.
# --

# Sample output...
# Go to http://tools.chilkat.io/jsonParse.cshtml
# and paste the JSON into the online form to generate JSON parsing code.

# {
#   "pkcs7": {
#     "verify": {
#       "digestAlgorithms": [
#         "sha256"
#       ],
#       "signerInfo": [
#         {
#           "cert": {
#             "serialNumber": "AAC5FC48C0FD8FBB",
#             "issuerCN": "AC ABCDEF RFB v5",
#             "issuerDN": "",
#             "digestAlgOid": "2.16.840.1.101.3.4.2.1",
#             "digestAlgName": "SHA-256"
#           },
#           "contentType": "1.2.840.113549.1.7.1",
#           "signingTime": "180607195054Z",
#           "messageDigest": "trzyxXbZ96z2M4mncyZ7BNMV4yIT92+5sS27Fu64iG8=",
#           "signingAlgOid": "1.2.840.113549.1.1.11",
#           "signerDigest": "trzyxXbZ96z2M4mncyZ7BNMV4yIT92+5sS27Fu64iG8="
#         },
#         {
#           "cert": {
#             "serialNumber": "324FB38ABD59723F",
#             "issuerCN": "AC ABCDEF RFB v5",
#             "issuerDN": "",
#             "digestAlgOid": "2.16.840.1.101.3.4.2.1",
#             "digestAlgName": "SHA-256"
#           },
#           "contentType": "1.2.840.113549.1.7.1",
#           "signingTime": "180608182517Z",
#           "messageDigest": "trzyxXbZ96z2M4mncyZ7BNMV4yIT92+5sS27Fu64iG8=",
#           "signingAlgOid": "1.2.840.113549.1.1.11",
#           "signerDigest": "trzyxXbZ96z2M4mncyZ7BNMV4yIT92+5sS27Fu64iG8="
#         }
#       ]
#     }
#   }
# }
# 

dt = Chilkat::CkDateTime.new()

i = 0
count_i = json.SizeOfArray("pkcs7.verify.digestAlgorithms")
while i < count_i
    json.put_I(i)
    strVal = json.stringOf("pkcs7.verify.digestAlgorithms[i]")
    i = i + 1
end
i = 0
count_i = json.SizeOfArray("pkcs7.verify.signerInfo")
while i < count_i
    json.put_I(i)
    certSerialNumber = json.stringOf("pkcs7.verify.signerInfo[i].cert.serialNumber")
    certIssuerCN = json.stringOf("pkcs7.verify.signerInfo[i].cert.issuerCN")
    certIssuerDN = json.stringOf("pkcs7.verify.signerInfo[i].cert.issuerDN")
    certDigestAlgOid = json.stringOf("pkcs7.verify.signerInfo[i].cert.digestAlgOid")
    certDigestAlgName = json.stringOf("pkcs7.verify.signerInfo[i].cert.digestAlgName")
    contentType = json.stringOf("pkcs7.verify.signerInfo[i].contentType")
    signingTime = json.stringOf("pkcs7.verify.signerInfo[i].signingTime")

    # The signingTime isin UTCTime format.
    # UTCTime values take the form of either "YYMMDDhhmm[ss]Z" or "YYMMDDhhmm[ss](+|-)hhmm"
    # Starting in Chilkat v9.5.0.77, the SetFromTimestamp method auto-recognizes the UTCTime format and parses it correctly.
    success = dt.SetFromTimestamp(signingTime)
    # To get the signingTime in other date/time formats, look at the online reference documentation for CkDateTime.
    # There are numerous methods such as GetAsDateTime, GetAsIso8601, GetAsUnixTime, GetAsRfc822, etc.

    messageDigest = json.stringOf("pkcs7.verify.signerInfo[i].messageDigest")
    signingAlgOid = json.stringOf("pkcs7.verify.signerInfo[i].signingAlgOid")
    signerDigest = json.stringOf("pkcs7.verify.signerInfo[i].signerDigest")
    i = i + 1
end

# println crypt.LastErrorText;
print "Success." + "\n";

 

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