EVP_F_PKEY_SET_TYPE:158:pkey_set_type
EVP_F_RC2_MAGIC_TO_METH:109:rc2_magic_to_meth
EVP_F_RC5_CTRL:125:rc5_ctrl
+EVP_F_R_32_12_16_INIT_KEY:242:r_32_12_16_init_key
EVP_F_S390X_AES_GCM_CTRL:201:s390x_aes_gcm_ctrl
EVP_F_UPDATE:173:update
KDF_F_PKEY_HKDF_CTRL_STR:103:pkey_hkdf_ctrl_str
EVP_R_AES_KEY_SETUP_FAILED:143:aes key setup failed
EVP_R_ARIA_KEY_SETUP_FAILED:176:aria key setup failed
EVP_R_BAD_DECRYPT:100:bad decrypt
+EVP_R_BAD_KEY_LENGTH:195:bad key length
EVP_R_BUFFER_TOO_SMALL:155:buffer too small
EVP_R_CAMELLIA_KEY_SETUP_FAILED:157:camellia key setup failed
EVP_R_CIPHER_PARAMETER_ERROR:122:cipher parameter error
static int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
+ if (EVP_CIPHER_CTX_key_length(ctx) > 255) {
+ EVPerr(EVP_F_R_32_12_16_INIT_KEY, EVP_R_BAD_KEY_LENGTH);
+ return 0;
+ }
RC5_32_set_key(&data(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx),
key, data(ctx)->rounds);
return 1;
{ERR_PACK(ERR_LIB_EVP, EVP_F_PKEY_SET_TYPE, 0), "pkey_set_type"},
{ERR_PACK(ERR_LIB_EVP, EVP_F_RC2_MAGIC_TO_METH, 0), "rc2_magic_to_meth"},
{ERR_PACK(ERR_LIB_EVP, EVP_F_RC5_CTRL, 0), "rc5_ctrl"},
+ {ERR_PACK(ERR_LIB_EVP, EVP_F_R_32_12_16_INIT_KEY, 0),
+ "r_32_12_16_init_key"},
{ERR_PACK(ERR_LIB_EVP, EVP_F_S390X_AES_GCM_CTRL, 0), "s390x_aes_gcm_ctrl"},
{ERR_PACK(ERR_LIB_EVP, EVP_F_UPDATE, 0), "update"},
{0, NULL}
{ERR_PACK(ERR_LIB_EVP, 0, EVP_R_ARIA_KEY_SETUP_FAILED),
"aria key setup failed"},
{ERR_PACK(ERR_LIB_EVP, 0, EVP_R_BAD_DECRYPT), "bad decrypt"},
+ {ERR_PACK(ERR_LIB_EVP, 0, EVP_R_BAD_KEY_LENGTH), "bad key length"},
{ERR_PACK(ERR_LIB_EVP, 0, EVP_R_BUFFER_TOO_SMALL), "buffer too small"},
{ERR_PACK(ERR_LIB_EVP, 0, EVP_R_CAMELLIA_KEY_SETUP_FAILED),
"camellia key setup failed"},
RC5 encryption algorithm in CBC, CFB, ECB and OFB modes respectively. This is a
variable key length cipher with an additional "number of rounds" parameter. By
-default the key length is set to 128 bits and 12 rounds.
+default the key length is set to 128 bits and 12 rounds. Alternative key lengths
+can be set using L<EVP_CIPHER_CTX_set_key_length(3)>. The maximum key length is
+2040 bits.
+
+The following rc5 specific I<ctrl>s are supported (see
+L<EVP_CIPHER_CTX_ctrl(3)>).
+
+=over 4
+
+=item EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_RC5_ROUNDS, rounds, NULL)
+
+Sets the number of rounds to B<rounds>. This must be one of RC5_8_ROUNDS,
+RC5_12_ROUNDS or RC5_16_ROUNDS.
+
+=item EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GET_RC5_ROUNDS, 0, &rounds)
+
+Stores the number of rounds currently configured in B<*rounds> where B<*rounds>
+is an int.
+
+=back
=back
implementation of the symmetric cipher. See L<EVP_CIPHER_meth_new(3)> for
details of the B<EVP_CIPHER> structure.
-=head1 BUGS
-
-Currently the number of rounds in RC5 can only be set to 8, 12 or 16.
-This is a limitation of the current RC5 code rather than the EVP interface.
=head1 SEE ALSO
# define EVP_F_PKEY_SET_TYPE 158
# define EVP_F_RC2_MAGIC_TO_METH 109
# define EVP_F_RC5_CTRL 125
+# define EVP_F_R_32_12_16_INIT_KEY 242
# define EVP_F_S390X_AES_GCM_CTRL 201
# define EVP_F_UPDATE 173
# define EVP_R_AES_KEY_SETUP_FAILED 143
# define EVP_R_ARIA_KEY_SETUP_FAILED 176
# define EVP_R_BAD_DECRYPT 100
+# define EVP_R_BAD_KEY_LENGTH 195
# define EVP_R_BUFFER_TOO_SMALL 155
# define EVP_R_CAMELLIA_KEY_SETUP_FAILED 157
# define EVP_R_CIPHER_PARAMETER_ERROR 122