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openssl-util: use EVP API to get RSA bits

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This commit is contained in:
Lennart Poettering 2021-09-29 15:03:44 +02:00
parent 18f568b8e6
commit 7f12adc300
1 changed files with 1 additions and 6 deletions
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7
src/shared/openssl-util.c
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@ -46,7 +46,6 @@ int rsa_pkey_to_suitable_key_size(
size_t *ret_suitable_key_size) {
size_t suitable_key_size;
const RSA *rsa;
int bits;
assert_se(pkey);
@ -58,11 +57,7 @@ int rsa_pkey_to_suitable_key_size(
if (EVP_PKEY_base_id(pkey) != EVP_PKEY_RSA)
return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), "X.509 certificate does not refer to RSA key.");
rsa = EVP_PKEY_get0_RSA(pkey);
if (!rsa)
return log_debug_errno(SYNTHETIC_ERRNO(EIO), "Failed to acquire RSA public key from X.509 certificate.");
bits = RSA_bits(rsa);
bits = EVP_PKEY_bits(pkey);
log_debug("Bits in RSA key: %i", bits);
/* We use PKCS#1 padding for the RSA cleartext, hence let's leave some extra space for it, hence only