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GSM Programming & Reverse Engineering Here you can post all Kind of GSM Programming and Reverse Engineering tools and Secrets.

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Old 09-03-2012, 15:48   #1 (permalink)
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what is this sha1WithRSAEncryption for?

Code:
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: 1 (0x1)
        Signature Algorithm: sha1WithRSAEncryption
        Issuer: DC=EDU, DC=UTEXAS, DC=TACC, O=UT-AUSTIN, CN=TACC Root CA
        Validity
            Not Before: Oct  2 03:56:02 2008 GMT
            Not After : Sep 30 03:56:02 2018 GMT
        Subject: DC=EDU, DC=UTEXAS, DC=TACC, O=UT-AUSTIN, CN=TACC Root CA
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
            RSA Public Key: (2048 bit)
                Modulus (2048 bit):
                    00:b0:94:3f:bb:75:cf:00:9b:fa:e7:77:56:ef:bf:
                    25:be:50:69:64:5d:bd:ca:c6:53:9b:82:69:71:d1:
                    17:73:9c:9b:d6:af:10:8f:cf:8f:e7:7e:f9:3c:ee:
                    da:14:5f:62:f8:7f:1b:f7:fe:63:b7:43:a9:f4:51:
                    51:5c:f3:7a:20:a0:99:4d:87:ca:2a:34:9b:95:a2:
                    d1:fa:8e:0f:9e:eb:95:c3:d3:3e:10:48:d4:a0:2d:
                    50:16:19:5f:fd:4d:4f:77:3c:65:00:2e:07:d7:24:
                    59:e0:dd:56:c9:fc:b8:db:a3:4d:51:6c:e4:23:38:
                    3e:de:e5:52:48:c7:9d:b0:94:e8:b2:68:c4:25:69:
                    5d:32:67:80:b9:3b:18:29:29:1f:d7:db:13:2d:a9:
                    bb:82:19:52:22:79:e3:81:26:dc:e0:72:f6:ad:ca:
                    e1:08:64:14:87:03:fa:a1:5f:9d:51:aa:b7:dc:f0:
                    cb:4a:79:9f:d9:bb:b2:b8:bf:44:42:ef:b6:e8:96:
                    9b:6c:02:0d:fa:2c:24:51:d5:3f:41:73:22:71:1a:
                    ff:b2:8f:9d:a6:e5:b3:c1:b8:98:fa:00:b1:31:fc:
                    29:08:e9:f0:26:90:31:8b:be:d2:30:64:94:41:ca:
                    b3:7c:05:d5:d8:ac:19:9e:ea:ad:0d:0a:12:60:d6:
                    93:d1
                Exponent: 51707 (0xc9fb)
        X509v3 extensions:
            X509v3 Basic Constraints: critical
                CA:TRUE
            X509v3 Subject Key Identifier: 
                8D:75:23:68:D1:55:99:6C:C3:A6:1E:86:FC:DF:C4:53:E8:E5:53:C7
            X509v3 Authority Key Identifier: 
                keyid:8D:75:23:68:D1:55:99:6C:C3:A6:1E:86:FC:DF:C4:53:E8:E5:53:C7

            X509v3 Key Usage: critical
                Certificate Sign, CRL Sign
            X509v3 Subject Alternative Name: 
                email:ca@tacc.utexas.edu
            X509v3 CRL Distribution Points: 
                URI:http://www.tacc.utexas.edu/CA/TACC_Root_CRL.der

    Signature Algorithm: sha1WithRSAEncryption
        9b:b0:77:80:ae:11:88:4e:74:72:dd:9c:01:b8:53:74:3d:41:
        38:75:d5:20:86:f7:d7:66:65:a8:1e:88:ab:03:3e:10:57:e8:
        e0:75:bc:db:f6:c3:6d:f3:df:17:c4:19:32:f1:12:b9:19:05:
        97:49:95:2b:98:58:3d:3d:76:55:6b:10:0b:9b:17:eb:0c:f5:
        a6:ce:5d:82:86:89:fa:52:d9:6e:06:f7:a5:2b:67:37:49:59:
        10:07:ee:7c:ca:20:f7:c1:8c:f8:35:ba:62:72:5a:58:86:29:
        bf:63:2f:41:b4:58:22:71:99:01:85:87:47:61:89:6d:48:f2:
        2a:1d:ae:d2:c2:59:38:72:63:7d:f0:cb:e0:d0:94:b0:0d:ad:
        85:a2:83:70:4d:02:1b:c6:e3:c2:29:18:11:51:d7:8f:a1:93:
        63:9a:cb:b0:a5:b6:35:f2:7c:55:4e:34:74:f1:06:8e:d5:8c:
        3a:c0:b4:1c:5a:32:db:b3:63:e4:68:b6:8f:a5:a9:44:3e:3d:
        10:a3:7b:fa:98:3a:0f:2d:88:12:6f:51:eb:44:a5:e9:68:4a:
        82:8f:ff:df:e9:a0:f3:f9:99:aa:ca:82:41:2a:b9:04:d6:bb:
        33:99:6d:cb:1d:51:80:53:e8:46:12:a5:4c:35:cb:0f:3c:55:
        10:53:64:0a
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
found a link http://www.tacc.utexas.edu/CA/684261aa.0
what is this for?
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Old 09-06-2012, 01:11   #2 (permalink)
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this rsa is 2048 bit mean it is 256 bytes and when you decrypt the Signature you will find the sha1 hash of the data (20 bytes in the end)
this can use to make some part of code run only if sha1 for this code in correct in the Signature


Best Regards
Ramiz
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