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50 lines
1020 B
C++
50 lines
1020 B
C++
#ifndef __STRP_STREAM_H__
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#define __STRP_STREAM_H__
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#include <openssl/aes.h>
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#include <openssl/hmac.h>
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#define SRTP_AES_KEY_SIZE 16
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#define SRTP_SALT_SIZE 14
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#define SRTP_MAC_KEY_SIZE 20
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#define SRTP_MAC_SIZE 20
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#include "RtpPacket.h"
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class SrtpStreamParameters {
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public:
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uint8_t cipherKey[SRTP_AES_KEY_SIZE];
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uint8_t macKey[SRTP_MAC_KEY_SIZE];
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uint8_t salt[SRTP_SALT_SIZE];
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SrtpStreamParameters(uint8_t *cipherKeyPtr, uint8_t* macKeyPtr, uint8_t *saltPtr)
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{
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memcpy(cipherKey, cipherKeyPtr, SRTP_AES_KEY_SIZE);
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memcpy(macKey, macKeyPtr, SRTP_MAC_KEY_SIZE);
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memcpy(salt, saltPtr, SRTP_SALT_SIZE);
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}
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};
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class SrtpStream {
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private:
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SrtpStreamParameters *parameters;
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AES_KEY key;
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void setIv(int64_t logicalSequence, uint32_t ssrc, uint8_t *salt, uint8_t *iv);
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public:
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SrtpStream(SrtpStreamParameters *parameters);
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~SrtpStream();
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int init();
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int decrypt(RtpPacket &packet, int64_t logicalSequence);
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int encrypt(RtpPacket &packet, int64_t logicalSequence);
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};
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#endif |