EVP_CIPHER_CTX_set_padding, EVP_enc_null, EVP_des_cbc, EVP_des_ecb,
EVP_des_cfb, EVP_des_ofb, EVP_des_ede_cbc, EVP_des_ede, EVP_des_ede_ofb,
EVP_des_ede_cfb, EVP_des_ede3_cbc, EVP_des_ede3, EVP_des_ede3_ofb,
-EVP_des_ede3_cfb, EVP_desx_cbc, EVP_rc4, EVP_rc4_40, EVP_idea_cbc,
-EVP_idea_ecb, EVP_idea_cfb, EVP_idea_ofb, EVP_rc2_cbc,
+EVP_des_ede3_cfb, EVP_desx_cbc, EVP_rc4, EVP_rc4_40, EVP_rc4_hmac_md5,
+EVP_idea_cbc, EVP_idea_ecb, EVP_idea_cfb, EVP_idea_ofb, EVP_rc2_cbc,
EVP_rc2_ecb, EVP_rc2_cfb, EVP_rc2_ofb, EVP_rc2_40_cbc, EVP_rc2_64_cbc,
EVP_bf_cbc, EVP_bf_ecb, EVP_bf_cfb, EVP_bf_ofb, EVP_cast5_cbc,
EVP_cast5_ecb, EVP_cast5_cfb, EVP_cast5_ofb, EVP_rc5_32_12_16_cbc,
EVP_aes_192_cbc, EVP_aes_192_ecb, EVP_aes_192_cfb, EVP_aes_192_ofb,
EVP_aes_256_cbc, EVP_aes_256_ecb, EVP_aes_256_cfb, EVP_aes_256_ofb,
EVP_aes_128_gcm, EVP_aes_192_gcm, EVP_aes_256_gcm,
-EVP_aes_128_ccm, EVP_aes_192_ccm, EVP_aes_256_ccm - EVP cipher routines
+EVP_aes_128_ccm, EVP_aes_192_ccm, EVP_aes_256_ccm,
+EVP_aes_128_cbc_hmac_sha1, EVP_aes_256_cbc_hmac_sha1,
+EVP_aes_128_cbc_hmac_sha256, EVP_aes_256_cbc_hmac_sha256,
+EVP_chacha20, EVP_chacha20_poly1305 - EVP cipher routines
=head1 SYNOPSIS
These ciphers require additional control operations to function correctly: see
CCM mode section below for details.
+=item EVP_chacha20()
+
+The ChaCha20 stream cipher. The key length is 256 bits, the IV is 96 bits long.
+
+=item EVP_chacha20_poly1305()
+
+Authenticated encryption with ChaCha20-Poly1305. Like EVP_chacha20() the key is
+256 bits and the IV is 96 bits. This supports additional authenticated
+data (AAD) and produces a 128 bit authentication tag. See the
+L</GCM and OCB Modes> section for more information.
+
=back
=head1 GCM and OCB Modes
length is used. For OCB AES the default is 16 (i.e. 128 bits). This is also the
maximum tag length for OCB.
-See L</EXAMPLES> below for an example of the use of GCM mode.
-
=head1 CCM Mode
The behaviour of CCM mode ciphers is similar to GCM mode but with a few
unsigned char key[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
unsigned char iv[] = {1,2,3,4,5,6,7,8};
char intext[] = "Some Crypto Text";
- EVP_CIPHER_CTX ctx;
+ EVP_CIPHER_CTX *ctx;
FILE *out;
ctx = EVP_CIPHER_CTX_new();