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signature-params: Provide option for maximum RSA/PSS salt length

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However, the length now has to be resolved early, so we don't operate on
the negative constant values e.g. when generating the encoding.
This commit is contained in:
Tobias Brunner
2018-10-26 09:03:26 +02:00
parent dd4bd21c5a
commit ecfe67550d
15 changed files with 119 additions and 71 deletions
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src/libstrongswan/plugins/gcrypt/gcrypt_rsa_private_key.c
+1 -5
View File
@@ -187,11 +187,7 @@ static bool sign_pkcs1(private_gcrypt_rsa_private_key_t *this,
}
else
{
u_int slen = hasher_hash_size(hash_algorithm);
if (pss->salt_len > RSA_PSS_SALT_LEN_DEFAULT)
{
slen = pss->salt_len;
}
u_int slen = pss->salt_len;
err = gcry_sexp_build(&in, NULL,
"(data(flags pss)(salt-length %u)(hash %s %b))",
slen, hash_name, hash.len, hash.ptr);
src/libstrongswan/plugins/gcrypt/gcrypt_rsa_public_key.c
+1 -5
View File
@@ -139,11 +139,7 @@ static bool verify_pkcs1(private_gcrypt_rsa_public_key_t *this,
if (pss)
{
u_int slen = hasher_hash_size(algorithm);
if (pss->salt_len > RSA_PSS_SALT_LEN_DEFAULT)
{
slen = pss->salt_len;
}
u_int slen = pss->salt_len;
err = gcry_sexp_build(&in, NULL,
"(data(flags pss)(salt-length %u)(hash %s %b))",
slen, hash_name, hash.len, hash.ptr);