bugDistributed Privacy Guard - Bugs: bug #62012, AEAD encrypted messages still...

 
 

bug #62012: AEAD encrypted messages still contain the MDC packet

Submitter:  Justus Winter <teythoon>
Submitted:  Tue 08 Feb 2022 03:30:21 PM UTC
   
 
Category:  Source Code Severity:  3 - Normal
Item Group:  Bug Status:  In Progress
Privacy:  Public Assigned to:  stamer
Open/Closed:  Open
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Fri 18 Feb 2022 12:18:11 PM UTC, comment #9: 

The workaround makes dkg-sop emit AEAD messages with OCB again, and I can confirm that indeed the MDC packet is gone.

 Justus Winter <teythoon>
Thu 17 Feb 2022 08:05:18 PM UTC, comment #8: 

I have applied a quick workaround. OCB should work now ...

 Heiko Stamer <stamer>
Group administrator
Tue 15 Feb 2022 04:40:31 PM UTC, comment #7: 

Very strange. It seems that LibTMCG is called with cipher mode 14 (indicates EAX), however, OCB is stated as preferred AEAD algorithm in a signature subpacket of the public key.

It looks like dkg-sop was built with GCRYPT_VERSION_NUMBER >= 0x010900, which selects EAX as default AEAD algorithm. That means I have to write the code for AEAD algorithm selection. This was not done yet due to missing tests with libgcrypt 1.9.x

Heiko Stamer <stamer>
Group administrator
Mon 14 Feb 2022 10:48:18 PM UTC, comment #6: 


Script started on 2022-02-14 23:44:30+01:00 [TERM="xterm" TTY="/dev/pts/5" COLUMNS="314" LINES="110"]
+zsh:1> sq packet dump bob-ocb.pgp
Public-Key Packet, new CTB, 397 bytes
    Version: 4
    Creation time: 2019-10-15 10:18:26 UTC
    Pk algo: RSA (Encrypt or Sign)
    Pk size: 3072 bits
    Fingerprint: D1A66E1A23B182C9980F788CFBFCC82A015E7330
    KeyID: FBFCC82A015E7330

User ID Packet, new CTB, 33 bytes
    Value: Bob Babbage <bob@openpgp.example>

Signature Packet, new CTB, 534 bytes
    Version: 4
    Type: PositiveCertification
    Pk algo: RSA (Encrypt or Sign)
    Hash algo: SHA512
    Hashed area:
      Signature creation time: 2022-02-14 13:51:15 UTC (critical)
      Symmetric algo preferences: AES256
      Issuer: FBFCC82A015E7330
      Notation: salt@notations.sequoia-pgp.org
        00000000  a8 2d e4 3b 11 6d ed 35  de 6b 6f 4e a7 e1 64 94
        00000010  0d eb 39 50 95 af f0 1a  da ca 80 ad 28 1a 14 3d
      Hash preferences: SHA512, SHA384, SHA256, SHA224, SHA1
      Compression preferences: Zlib, BZip2, Zip
      Keyserver preferences: no modify
      Key flags: CS
      Features: MDC, AEAD
      Issuer Fingerprint: D1A66E1A23B182C9980F788CFBFCC82A015E7330
      AEAD preferences: OCB
    Digest prefix: E02E
    Level: 0 (signature over data)

Signature Packet, new CTB, 462 bytes
    Version: 4
    Type: PositiveCertification
    Pk algo: RSA (Encrypt or Sign)
    Hash algo: SHA512
    Hashed area:
      Key flags: CS
      Symmetric algo preferences: AES256, AES192, AES128, TripleDES
      Hash preferences: SHA512, SHA384, SHA256, SHA224, SHA1
      Compression preferences: Zlib, BZip2, Zip
      Features: MDC
      Keyserver preferences: no modify
      Issuer Fingerprint: D1A66E1A23B182C9980F788CFBFCC82A015E7330
      Signature creation time: 2019-10-15 10:27:06 UTC
    Unhashed area:
      Issuer: FBFCC82A015E7330
    Digest prefix: 6F6C
    Level: 0 (signature over data)

Public-Subkey Packet, new CTB, 397 bytes
    Version: 4
    Creation time: 2019-10-15 10:18:26 UTC
    Pk algo: RSA (Encrypt or Sign)
    Pk size: 3072 bits
    Fingerprint: 1DDCE15F09217CEE2F3B37607C2FAA4DF93C37B2
    KeyID: 7C2FAA4DF93C37B2

Signature Packet, new CTB, 438 bytes
    Version: 4
    Type: SubkeyBinding
    Pk algo: RSA (Encrypt or Sign)
    Hash algo: SHA512
    Hashed area:
      Issuer Fingerprint: D1A66E1A23B182C9980F788CFBFCC82A015E7330
      Signature creation time: 2019-10-15 10:18:26 UTC
      Key flags: EtEr
    Unhashed area:
      Issuer: FBFCC82A015E7330
    Digest prefix: E9FF
    Level: 0 (signature over data)

+zsh:1> /home/teythoon/repos/pep/pgpzoo/bin/dkg-sop -V -V -V encrypt bob-ocb.pgp
+zsh:1> sq packet dump
INFO: using LibTMCG version 1.4.0
INFO: SymmetricEncryptAEAD called with skalgo = 9 cipher mode = 14
INFO: SymmetricEncryptAEAD |in| = 36 and |ad| = 13
INFO: SymmetricEncryptAEAD nonce = fa 29 c3 24 1f 75 aa a9 a af 0 c0 24 c6 86 cb
INFO: SymmetricEncryptAEAD chunkdim = 65536 and chunks = 0
INFO: SymmetricEncryptAEAD ad = d4 1 9 1 a 0 0 0 0 0 0 0 0
INFO: SymmetricEncryptAEAD on final chunk #0 with nbytes = 0
INFO: SymmetricEncryptAEAD len = 36
INFO: SymmetricEncryptAEAD in = cb c 62 0 62 a db 4e 68 65 6c 6c 6f a d3 14 4e f6 a0 5f a3 6d bc 6b 37 8b 86 dc a5 74 dc 61 9c b2 48 5
INFO: SymmetricEncryptAEAD out = 9f 15 9c 6d 6d b7 55 ec 6a d1 c1 dd e7 ae 5 a6 d7 d4 20 ce bf c9 d8 f5 2 17 9b 31 57 fd fa cf 64 4f 15 a8
INFO: SymmetricEncryptAEAD tag = a9 a 1c 86 63 e 6c 2f cc e1 eb f1 7b 3f 8d 9b
INFO: SymmetricEncryptAEAD totalbytes = 36
INFO: SymmetricEncryptAEAD final tag = fd ce f6 5b cc d6 cf 5a 3 e 3 80 a3 4e df e0
INFO: PacketDecode() = 6 version = 4
INFO: key ID of primary key: fb fc c8 2a 1 5e 73 30
INFO: PacketDecode() = 13 version = 0
INFO: signature subpacket type = 2 found
INFO: signature subpacket type = 11 found
INFO: signature subpacket type = 16 found
INFO: signature subpacket type = 20 found
INFO: notation data found
INFO: signature subpacket type = 21 found
INFO: signature subpacket type = 22 found
INFO: signature subpacket type = 23 found
INFO: signature subpacket type = 27 found
INFO: signature subpacket type = 30 found
INFO: signature subpacket type = 33 found
INFO: signature subpacket type = 34 found
INFO: PacketDecode() = 2 version = 4
INFO: embeddedsigs.size() = 0
INFO: recipientfprs.size() = 0
INFO: attestedcerts.size() = 0
INFO: mdbits = 3067
INFO: signature subpacket type = 27 found
INFO: signature subpacket type = 11 found
INFO: signature subpacket type = 21 found
INFO: signature subpacket type = 22 found
INFO: signature subpacket type = 30 found
INFO: signature subpacket type = 23 found
INFO: signature subpacket type = 33 found
INFO: signature subpacket type = 2 found
INFO: signature subpacket type = 16 found
INFO: PacketDecode() = 2 version = 4
INFO: embeddedsigs.size() = 0
INFO: recipientfprs.size() = 0
INFO: attestedcerts.size() = 0
INFO: mdbits = 3071
INFO: PacketDecode() = 14 version = 4
INFO: key ID of subkey: 7c 2f aa 4d f9 3c 37 b2
INFO: signature subpacket type = 33 found
INFO: signature subpacket type = 2 found
INFO: signature subpacket type = 27 found
INFO: signature subpacket type = 16 found
INFO: PacketDecode() = 2 version = 4
INFO: embeddedsigs.size() = 0
INFO: recipientfprs.size() = 0
INFO: attestedcerts.size() = 0
INFO: mdbits = 3071
INFO: key ID of primary key: fb fc c8 2a 1 5e 73 30
INFO: fingerprint of primary key: d1 a6 6e 1a 23 b1 82 c9 98 f 78 8c fb fc c8 2a 1 5e 73 30
INFO: number of selfsigs = 0
INFO: number of keyrevsigs = 0
INFO: number of certrevsigs = 0
INFO: number of userids = 1
INFO: number of userattributes = 0
INFO: number of subkeys = 1
INFO: number of revkeys = 0
INFO: userid = "Bob Babbage <bob@openpgp.example>"
INFO: number of selfsigs = 2
INFO: number of revsigs = 0
INFO: number of certsigs = 0
INFO: number of attestsigs = 0
INFO: sig type = 0x13 pkalgo = 1 hashalgo = 10 revocable = true exportable = true version = 4 creationtime = 1571135226 expirationtime = 0 keyexpirationtime = 0 revcode = 0 packet.size() = 465 hspd.size() = 56 issuer = fb fc c8 2a 1 5e 73 30  issuerfpr = d1 a6 6e 1a 23 b1 82 c9 98 f 78 8c fb fc c8 2a 1 5e 73 30  keyflags = 3  revkeys.size() = 0 embeddedsigs.size() = 0 recipientfprs.size() = 0 attestedcerts.size() = 0 left = 6f 6c
INFO: left = 6f 6c
INFO: hash = 6f 6c b1 e9 e0 d0 73 5a f3 8c 78 46 1e c7 7f f ea b7 1c 5c 79 5e 14 ec 62 18 91 e4 44 31 1 32 f0 29 a0 8d 32 48 ff e2 e4 a9 ff 84 49 3f 84 5f fe e4 be a6 5b ea 2d 9b af c e9 75 85 49 a9 46
INFO: sig type = 0x13 pkalgo = 1 hashalgo = 10 revocable = true exportable = true version = 4 creationtime = 1644846675 expirationtime = 0 keyexpirationtime = 0 revcode = 0 packet.size() = 537 hspd.size() = 138 issuer = fb fc c8 2a 1 5e 73 30  issuerfpr = d1 a6 6e 1a 23 b1 82 c9 98 f 78 8c fb fc c8 2a 1 5e 73 30  keyflags = 3  revkeys.size() = 0 embeddedsigs.size() = 0 recipientfprs.size() = 0 attestedcerts.size() = 0 left = e0 2e
INFO: left = e0 2e
INFO: hash = e0 2e 50 34 3b df 67 52 22 5b f4 c7 12 ef 43 30 85 d7 fd 29 fb 1 f3 42 ed 31 3b 4c 22 d7 11 d3 9f 3b 20 4b 84 93 d1 ba 9a 7a c0 e 7e 39 61 6b f2 9f 1b aa fe c2 84 dd 23 b0 a8 95 c9 34 8f c2
INFO: user ID is valid
INFO: primary key update flags to 3
INFO: primary key update features to 1
INFO: primary key update psa to 9 8 7 2
INFO: primary key update pha to 10 9 8 11 2
INFO: primary key update pca to 2 3 1
INFO: primary key update flags to 3
INFO: primary key update features to 3
INFO: primary key update psa to 9
INFO: primary key update pha to 10 9 8 11 2
INFO: primary key update pca to 2 3 1
INFO: primary key update paa to 2
INFO: key flags on primary key are CS
INFO: key ID of subkey: 7c 2f aa 4d f9 3c 37 b2
INFO: fingerprint of subkey: 1d dc e1 5f 9 21 7c ee 2f 3b 37 60 7c 2f aa 4d f9 3c 37 b2
INFO: number of selfsigs = 0
INFO: number of bindsigs = 1
INFO: number of pbindsigs = 0
INFO: number of keyrevsigs = 0
INFO: number of certrevsigs = 0
INFO: number of revkeys = 0
INFO: creationtime = 1571134706
INFO: expirationtime = 0
INFO: bindingtime = 0
INFO: sig type = 0x18 pkalgo = 1 hashalgo = 10 revocable = true exportable = true version = 4 creationtime = 1571134706 expirationtime = 0 keyexpirationtime = 0 revcode = 0 packet.size() = 441 hspd.size() = 32 issuer = fb fc c8 2a 1 5e 73 30  issuerfpr = d1 a6 6e 1a 23 b1 82 c9 98 f 78 8c fb fc c8 2a 1 5e 73 30  keyflags = c  revkeys.size() = 0 embeddedsigs.size() = 0 recipientfprs.size() = 0 attestedcerts.size() = 0 left = e9 ff
INFO: left = e9 ff
INFO: hash = e9 ff d9 12 d4 da 96 a8 77 b4 ce 95 e 44 16 f0 6f e2 e f8 39 85 57 3d c7 71 97 94 e9 24 8 9f 38 aa 81 ac 86 60 d9 f2 35 1d ad f8 97 8d 3 e2 de f6 e0 1c 3d ba 35 3d 4d 96 36 a0 19 fa 8d e3
12
INFO: bindingtime = 1571134706
INFO: subkey is valid
INFO: key flags on subkey are Ee
INFO: RSA with |n| = 3072 bits, |e| = 17 bits
INFO: RSA with |n| = 3072 bits, |e| = 17 bits
WARNING: selected algorithm is none of the preferred AEAD algorithms; AEAD disabled
INFO: 1 subkey(s) selected for encryption of session key
Public-Key Encrypted Session Key Packet, new CTB, 396 bytes
    Version: 3
    Recipient: 7C2FAA4DF93C37B2
    Pk algo: RSA (Encrypt or Sign)

Sym. Encrypted and Integrity Protected Data Packet, new CTB, 55 bytes
    Version: 1
    No session key supplied


Script done on 2022-02-14 23:44:30+01:00 [COMMAND_EXIT_CODE="0"]


This is bob's cert:


-----BEGIN PGP PUBLIC KEY BLOCK-----
Comment: D1A6 6E1A 23B1 82C9 980F  788C FBFC C82A 015E 7330
Comment: Bob Babbage <bob@openpgp.example>
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/Dn6rrd5y2AObaifV7wIhEJnvqgFXDN2RXGjLeCOHV4Q2WTYPg/S4k1nMXVDwZXr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=y9r4
-----END PGP PUBLIC KEY BLOCK-----


 Justus Winter <teythoon>
Mon 14 Feb 2022 07:27:09 PM UTC, comment #5: 


comment #4:

> Hm, my dkg-sop no longer produces AEAD encrypted messages


Please, can you run dkg-sop with options "-V -V -V"

> I know it used to do that in the past, at least for OCB (EAX never worked for me, I guess because my gcrypt is < 1.9.


Yes, OCB should be supported by libgcrypt 1.8.x

 Heiko Stamer <stamer>
Group administrator
Mon 14 Feb 2022 02:03:04 PM UTC, comment #4: 

Hm, my dkg-sop no longer produces AEAD encrypted messages:


/home/teythoon/repos/pep/pgpzoo/bin/dkg-sop encrypt bob-ocb.pgp <<< hello | sq packet dump
Public-Key Encrypted Session Key Packet, new CTB, 396 bytes
    Version: 3
    Recipient: 7C2FAA4DF93C37B2
    Pk algo: RSA (Encrypt or Sign)

Sym. Encrypted and Integrity Protected Data Packet, new CTB, 55 bytes
    Version: 1
    No session key supplied


Reverting the topmost change doesn't bring that back.  I don't know what else could have changed.

I know it used to do that in the past, at least for OCB (EAX never worked for me, I guess because my gcrypt is < 1.9.

 Justus Winter <teythoon>
Mon 14 Feb 2022 11:18:32 AM UTC, comment #3: 

Yes, it is fixed, thanks!

 Justus Winter <teythoon>
Sun 13 Feb 2022 06:36:57 PM UTC, comment #2: 

This is a bug in dkg-sop that has been fixed with the following commit: https://git.savannah.nongnu.org/cgit/dkgpg.git/commit/?id=7e6671bc43b4222d7e40e770bb3b4f788b5e2c2c

 Heiko Stamer <stamer>
Group administrator
Sun 13 Feb 2022 05:59:35 PM UTC, comment #1: 

Thanks for reporting. I will analyze this issue soon.

 Heiko Stamer <stamer>
Group administrator
Tue 08 Feb 2022 03:30:21 PM UTC, original submission:  

When I encrypt a message using AEAD with dkgpg, I still get a MDC packet:


-----BEGIN PGP MESSAGE-----
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=Npcn
-----END PGP MESSAGE-----


This is encrypted with Bob's secret key from the shared test certificates.  With a patched version of Sequoia with the message grammar checks removed, I can dump it:


% target/debug/sq decrypt --recipient-key /tmp/bob*pgp --dump </tmp/msg
Public-Key Encrypted Session Key Packet, new CTB, 396 bytes
    Version: 3
    Recipient: 7C2FAA4DF93C37B2
    Pk algo: RSA (Encrypt or Sign)

Encrypted and protected using AES with 256-bit key/OCB mode
AEAD Encrypted Data Packet, new CTB, 95 bytes
│   Version: 1
│   Symmetric algo: AES with 256-bit key
│   AEAD: OCB mode
│   Chunk size: 65536
│   IV: DA9DCC049A4B7E53A7399CACC8770C
│
├── Literal Data Packet, new CTB, 20 bytes
│       Format: Binary data
│       Timestamp: 2022-02-08 15:07:19 UTC
│
└── Modification Detection Code Packet, new CTB, 20 bytes
        Digest: B9A88EF662B41DE3A38D21BAF858FDCDF9F14171
        Computed digest: 0000000000000000000000000000000000000000

Hello World :)


 Justus Winter <teythoon>

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

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    Follow 6 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2022-02-14 stamer StatusFixed In Progress
    2022-02-13 stamer CategoryNone Source Code
        Item GroupNone Bug
        StatusIn Progress Fixed
    2022-02-13 stamer StatusNone In Progress
        Assigned toNone stamer

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