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quic: Support TLS_AES_128_CCM_SHA256

This commit is contained in:
Tatsuhiro Tsujikawa 2019-08-08 09:59:54 +09:00
parent 6002fac9f1
commit 7aa4bff97b
1 changed files with 32 additions and 0 deletions
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32
src/quic.cc
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@ -45,6 +45,8 @@ const EVP_CIPHER *aead(SSL *ssl) {
return EVP_aes_256_gcm();
case 0x03001303u: // TLS_CHACHA20_POLY1305_SHA256
return EVP_chacha20_poly1305();
case 0x03001304u: // TLS_AES_128_CCM_SHA256
return EVP_aes_128_ccm();
default:
assert(0);
}
@ -53,6 +55,7 @@ const EVP_CIPHER *aead(SSL *ssl) {
const EVP_CIPHER *hp(SSL *ssl) {
switch (SSL_CIPHER_get_id(SSL_get_current_cipher(ssl))) {
case 0x03001301u: // TLS_AES_128_GCM_SHA256
case 0x03001304u: // TLS_AES_128_CCM_SHA256
return EVP_aes_128_ctr();
case 0x03001302u: // TLS_AES_256_GCM_SHA384
return EVP_aes_256_ctr();
@ -67,6 +70,7 @@ const EVP_MD *prf(SSL *ssl) {
switch (SSL_CIPHER_get_id(SSL_get_current_cipher(ssl))) {
case 0x03001301u: // TLS_AES_128_GCM_SHA256
case 0x03001303u: // TLS_CHACHA20_POLY1305_SHA256
case 0x03001304u: // TLS_AES_128_CCM_SHA256
return EVP_sha256();
case 0x03001302u: // TLS_AES_256_GCM_SHA384
return EVP_sha384();
@ -95,6 +99,9 @@ size_t aead_tag_length(const EVP_CIPHER *aead) {
if (aead == EVP_chacha20_poly1305()) {
return EVP_CHACHAPOLY_TLS_TAG_LEN;
}
if (aead == EVP_aes_128_ccm()) {
return EVP_CCM_TLS_TAG_LEN;
}
assert(0);
}
} // namespace
@ -269,6 +276,11 @@ ssize_t encrypt(uint8_t *dest, size_t destlen, const uint8_t *plaintext,
return -1;
}
if (aead == EVP_aes_128_ccm() &&
EVP_CIPHER_CTX_ctrl(actx, EVP_CTRL_AEAD_SET_TAG, taglen, nullptr) != 1) {
return -1;
}
if (EVP_EncryptInit_ex(actx, nullptr, nullptr, key, nonce) != 1) {
return -1;
}
@ -276,6 +288,11 @@ ssize_t encrypt(uint8_t *dest, size_t destlen, const uint8_t *plaintext,
size_t outlen = 0;
int len;
if (aead == EVP_aes_128_ccm() &&
EVP_EncryptUpdate(actx, nullptr, &len, nullptr, plaintextlen) != 1) {
return -1;
}
if (EVP_EncryptUpdate(actx, nullptr, &len, ad, adlen) != 1) {
return -1;
}
@ -333,6 +350,12 @@ ssize_t decrypt(uint8_t *dest, size_t destlen, const uint8_t *ciphertext,
return -1;
}
if (aead == EVP_aes_128_ccm() &&
EVP_CIPHER_CTX_ctrl(actx, EVP_CTRL_AEAD_SET_TAG, taglen,
const_cast<uint8_t *>(tag)) != 1) {
return -1;
}
if (EVP_DecryptInit_ex(actx, nullptr, nullptr, key, nonce) != 1) {
return -1;
}
@ -340,6 +363,11 @@ ssize_t decrypt(uint8_t *dest, size_t destlen, const uint8_t *ciphertext,
size_t outlen;
int len;
if (aead == EVP_aes_128_ccm() &&
EVP_DecryptUpdate(actx, nullptr, &len, nullptr, ciphertextlen) != 1) {
return -1;
}
if (EVP_DecryptUpdate(actx, nullptr, &len, ad, adlen) != 1) {
return -1;
}
@ -350,6 +378,10 @@ ssize_t decrypt(uint8_t *dest, size_t destlen, const uint8_t *ciphertext,
outlen = len;
if (aead == EVP_aes_128_ccm()) {
return outlen;
}
if (EVP_CIPHER_CTX_ctrl(actx, EVP_CTRL_AEAD_SET_TAG, taglen,
const_cast<uint8_t *>(tag)) != 1) {
return -1;