84faa631a5
Refactor memory allocation for the symmetric ciphers context structures.
5781341d99
Use the OpenSSL HMAC implementation, and thus also the OpenSSL EVP_sha1()
implementation.
Experiments show about a 1.5x speedup on Intel CPUs with AVX2.
fb95445019
When building with OpenSSL, pass the AES_ICM key to the EVP context (and
thus, do AES key expansion) in srtp_cipher_init, not srtp_cipher_set_iv.
This means that AES key expansion is done once per key, rather than once
per packet, resulting in a 2-3x speedup for AES-128.
1acba56991
When building with OpenSSL, pass the AES_GCM key to the EVP context (and
thus, do AES key expansion) in srtp_cipher_init, not srtp_cipher_set_iv.
Improves AES_GCM performance 2x-3x.
0b45423678
Changes for OpenSSL 1.1.0 compatibility.
In OpenSSL 1.1.0, EVP_CIPHER_CTX, HMAC_CTX, and EVP_MD_CTX are opaque
types, and have to be allocated with *_new methods and deallocated with
*_free.
EVP_CIPHER_CTX_new/free is present in OpenSSL 1.0.1 and later, but
HMAC_CTX_new and EVP_MD_CTX_new are new in OpenSSL 1.1.0.
Use the _new unconditionally for ciphers, and conditionally use the old
or new APIs for HMAC and MD.
No noticible performance change for older OpenSSL.
PR: 228866
bfc941deb4