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pgcrypto: support changing S2K iteration count

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pgcrypto already supports key-stretching during symmetric encryption,
including the salted-and-iterated method; but the number of iterations
was not configurable.  This commit implements a new s2k-count parameter
to pgp_sym_encrypt() which permits selecting a larger number of
iterations.

Author: Jeff Janes
This commit is contained in:
Alvaro Herrera
2016-03-09 14:31:07 -03:00
parent b6fb6471f6
commit 188f359d39
9 changed files with 98 additions and 16 deletions
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2
contrib/pgcrypto/pgp-encrypt.c
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@ -567,7 +567,7 @@ init_s2k_key(PGP_Context *ctx)
if (ctx->s2k_cipher_algo < 0)
ctx->s2k_cipher_algo = ctx->cipher_algo;
res = pgp_s2k_fill(&ctx->s2k, ctx->s2k_mode, ctx->s2k_digest_algo);
res = pgp_s2k_fill(&ctx->s2k, ctx->s2k_mode, ctx->s2k_digest_algo, ctx->s2k_count);
if (res < 0)
return res;