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#include <hmac.h> void hmac_md5 (unsigned char *data, int data_len, unsigned char *key, int key_len, unsigned char digest[16]);
HMAC is a cryptographic mechanism for message authentication described in RFC2104. It allows a sender and receiver with a shared cryptographic key to verify the authenticity of a message.
void hmac_md5 (unsigned char *data, int data_len, unsigned char *key, int key_len, unsigned char digest[16]);
Computes MD5 digest of data using key key.
data : | pointer to data stream. |
data_len : | length of data stream in bytes. |
key : | pointer to authentication key. |
key_len : | length of authentication key in bytes. |
digest : | digest to be filled in. |
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