Hi, Im not good in C and algorithms, so I have a question.
A recipient cannot decrypt my gpgsm signed and encrypted data. He sent me some data he can decrypt. It looks like this: 121:d=5 hl=2 l= 13 cons: SEQUENCE 123:d=6 hl=2 l= 9 prim: OBJECT :rsaEncryption 134:d=6 hl=2 l= 0 prim: NULL 136:d=5 hl=4 l= 256 prim: OCTET STRING [HEX DUMP]:47E37BFB771546DC3A8732EDE391E2F5241F1CA30 .. 396:d=3 hl=5 l=412998 cons: SEQUENCE 401:d=4 hl=2 l= 9 prim: OBJECT :pkcs7-data 412:d=4 hl=2 l= 20 cons: SEQUENCE 414:d=5 hl=2 l= 8 prim: OBJECT :des-ede3-cbc 424:d=5 hl=2 l= 8 prim: OCTET STRING [HEX DUMP]:A5A8A903C2569A48 434:d=4 hl=5 l=412960 prim: cont [ 0 ] A3 76 AD C6 7C FF 55 2A 51 B0 EF 3F 66 32 26 F7 ........................ My gpgsm data looks like this: 114:d=6 hl=2 l= 9 prim: OBJECT :rsaEncryption 125:d=5 hl=4 l= 256 prim: OCTET STRING [HEX DUMP]:4EF9C8BAF21E4C11CD867D30D68C67DB465 385:d=3 hl=2 l=inf cons: SEQUENCE 387:d=4 hl=2 l= 9 prim: OBJECT :pkcs7-data 398:d=4 hl=2 l= 20 cons: SEQUENCE 400:d=5 hl=2 l= 8 prim: OBJECT :des-ede3-cbc 410:d=5 hl=2 l= 8 prim: OCTET STRING [HEX DUMP]:B5169BAC652FBBDC 420:d=4 hl=2 l=inf cons: cont [ 0 ] 422:d=5 hl=4 l=4000 prim: OCTET STRING [HEX DUMP]:622551D24221160CFB04821BE62FD681 .. 4426:d=5 hl=4 l=4000 prim: OCTET STRING [HEX DUMP]:B7C8DCCF89 . The differences I see here: 1. There is an extra NULL Object below OBJECT:rsaEncryption 2. The encryptedcontent looks like one big block 412960 while there are 4kB blocks 4000 in the gpgsm-Data. He also told me he can decrypt data that has 1kB blocks (haven't seen such stuff), so I checked the gnupg and libgcrypt source-packages to find out where and why. But as I said Im not fit in C . So heres my question: Why is the gpgsm data in 4kB blocks and is there a easy way to change this blocksize. Thanks -- Siegfried Arcor.de Gaming Area - kostenfrei daddeln bis der Arzt kommt! Jetzt checken und aus über 80 Spielen wählen! http://www.arcor.de/footer-gaming/ _______________________________________________ Gnupg-users mailing list Gnupg-users@gnupg.org http://lists.gnupg.org/mailman/listinfo/gnupg-users
