View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000148 | file | General | public | 2020-02-23 05:09 | 2020-03-20 17:13 |
| Reporter | hlein | Assigned To | christos | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Platform | amd64 | OS | Linux | ||
| Product Version | 5.38 | ||||
| Fixed in Version | 5.39 | ||||
| Summary | 0000148: PGP magic does not recognize files encrypted to Elgamal or ECC keys | ||||
| Description | ...Long submission that took hours to write eaten by Mantis. tl;drewrite: file does not recognize files encrypted with Elgamal keys (the default for old-fashioned DSA sign-only keys). I'll attach a patch that makes file properly recognize files encrypted to Elgamal keys, for example: $ file elg* elg1024.pgp: PGP Elgamal encrypted session key - keyid: 833B4548 8802A9A6 Elgamal Encrypt-Only 1024b. elg1024_enconly.pgp: PGP Elgamal encrypted session key - keyid: 833B4548 8802A9A6 Elgamal Encrypt-Only 1024b. elg2048.pgp: PGP Elgamal encrypted session key - keyid: 12AFCC09 B6C9040B Elgamal Encrypt-Only 2048b. elg2048_enconly.pgp: PGP Elgamal encrypted session key - keyid: 12AFCC09 B6C9040B Elgamal Encrypt-Only 2048b. elg3072.pgp: PGP Elgamal encrypted session key - keyid: 213768B7 E0AC80E4 Elgamal Encrypt-Only 3072b. elg3072_enconly.pgp: PGP Elgamal encrypted session key - keyid: 213768B7 E0AC80E4 Elgamal Encrypt-Only 3072b. | ||||
| Additional Information | This is on top of the other patches to magic/Magdir/pgp I've submitted, although for once there might not actually be any overlap/collision. | ||||
| Tags | No tags attached. | ||||
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file-magic-pgp-elgamal.diff (1,300 bytes)
--- magic/Magdir/pgp.orig 2020-02-21 18:38:58.661288076 -0500 +++ magic/Magdir/pgp 2020-02-22 22:02:37.560177451 -0500 @@ -209,6 +209,51 @@ >13 string \x1f\xf9 >1039 byte 0xd2 . +# 1024b Elgamal encrypted data + +0 string \x85\x01\x0e\x03 PGP Elgamal encrypted session key - +>4 belong x keyid: %08X +>8 belong x %08X +>12 byte 0x10 Elgamal Encrypt-Only 1024b. +>13 string \x04\x00 +>13 string \x03\xff +>13 string \x03\xfe +>13 string \x03\xfd +>13 string \x03\xfc +>13 string \x03\xfb +>13 string \x03\xfa +>13 string \x03\xf9 + +# 2048b Elgamal encrypted data + +0 string \x85\x02\x0e\x03 PGP Elgamal encrypted session key - +>4 belong x keyid: %08X +>8 belong x %08X +>12 byte 0x10 Elgamal Encrypt-Only 2048b. +>13 string \x08\x00 +>13 string \x07\xff +>13 string \x07\xfe +>13 string \x07\xfd +>13 string \x07\xfc +>13 string \x07\xfb +>13 string \x07\xfa +>13 string \x07\xf9 + +# 3072b Elgamal encrypted data + +0 string \x85\x03\x0e\x03 PGP Elgamal encrypted session key - +>4 belong x keyid: %08X +>8 belong x %08X +>12 byte 0x10 Elgamal Encrypt-Only 3072b. +>13 string \x0c\x00 +>13 string \x0b\xff +>13 string \x0b\xfe +>13 string \x0b\xfd +>13 string \x0b\xfc +>13 string \x0b\xfb +>13 string \x0b\xfa +>13 string \x0b\xf9 + # crypto algo mapper 0 name crypto |
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Patch applied, sorry you lost time with mantis... Do you know what's broken with it? |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2020-02-23 05:09 | hlein | New Issue | |
| 2020-02-23 05:09 | hlein | File Added: file-magic-pgp-elgamal.diff | |
| 2020-03-20 17:11 | christos | Assigned To | => christos |
| 2020-03-20 17:11 | christos | Status | new => assigned |
| 2020-03-20 17:13 | christos | Status | assigned => resolved |
| 2020-03-20 17:13 | christos | Resolution | open => fixed |
| 2020-03-20 17:13 | christos | Fixed in Version | => 5.39 |
| 2020-03-20 17:13 | christos | Note Added: 0003398 |
