func init() {
aes_ciphers = []evp_cipher_ptr{
C.EVP_aes_128_ctr(),
C.EVP_aes_128_ofb(),
C.EVP_aes_192_ctr(),
C.EVP_aes_192_ctr(), // no 192-ofb
C.EVP_aes_256_ctr(),
C.EVP_aes_256_ofb(),
}
}
func New(key, iv []byte) Cipher {
c := &cipher{}
cgolock.Lock()
defer cgolock.Unlock()
C.EVP_CIPHER_CTX_init(&c.evp)
runtime.SetFinalizer(c, func(c *cipher) {
C.EVP_CIPHER_CTX_cleanup(&c.evp)
})
C.EVP_EncryptInit_ex(&c.evp, C.EVP_aes_128_ctr(), nil, (*C.uchar)(&key[0]), (*C.uchar)(&iv[0]))
return c
}