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gpg: Default to SHA-256 for all signature types on RSA keys.

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* g10/main.h (DEFAULT_DIGEST_ALGO): Use SHA256 in --gnupg and SHA1 in
strict RFC or PGP modes.
* g10/sign.c (make_keysig_packet): Use DEFAULT_DIGEST_ALGO also for
RSA key signatures.
* configure.ac: Do not allow to disable sha256.
This commit is contained in:
Werner Koch 2014-09-27 15:21:02 +02:00
parent f3625bb018
commit d332467005
3 changed files with 3 additions and 3 deletions
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2
configure.ac
View File

@ -254,7 +254,7 @@ GNUPG_GPG_DISABLE_ALGO([md5],[MD5 hash])
# SHA1 is a MUSt algorithm
GNUPG_GPG_DISABLE_ALGO([rmd160],[RIPE-MD160 hash])
GNUPG_GPG_DISABLE_ALGO([sha224],[SHA-224 hash])
GNUPG_GPG_DISABLE_ALGO([sha256],[SHA-256 hash])
# SHA256 is a MUST algorithm for GnuPG.
GNUPG_GPG_DISABLE_ALGO([sha384],[SHA-384 hash])
GNUPG_GPG_DISABLE_ALGO([sha512],[SHA-512 hash])

2
g10/main.h
View File

@ -38,7 +38,7 @@
# define DEFAULT_CIPHER_ALGO CIPHER_ALGO_3DES
#endif
#define DEFAULT_DIGEST_ALGO DIGEST_ALGO_SHA1
#define DEFAULT_DIGEST_ALGO ((GNUPG)? DIGEST_ALGO_SHA256:DIGEST_ALGO_SHA1)
#define DEFAULT_S2K_DIGEST_ALGO DIGEST_ALGO_SHA1
#ifdef HAVE_ZIP
# define DEFAULT_COMPRESS_ALGO COMPRESS_ALGO_ZIP

2
g10/sign.c
View File

@ -1499,7 +1499,7 @@ make_keysig_packet( PKT_signature **ret_sig, PKT_public_key *pk,
(ecdsa_qbits_from_Q (gcry_mpi_get_nbits (pksk->pkey[1]))/8);
}
else
digest_algo = DIGEST_ALGO_SHA1;
digest_algo = DEFAULT_DIGEST_ALGO;
}
if ( gcry_md_open (&md, digest_algo, 0 ) )