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Short and sweet classical cryptographic primitives

tinycrypt/chacha20_poly1305.h (view raw)

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#ifndef TNT_CC20_P1305_H
#define TNT_CC20_P1305_H

#include <stdbool.h>
#include <stdint.h>

/// Implements the AEAD-ChaCha20-Poly1305 encryption and MAC algorithm defined
/// in RFC 8439
void tct_aead_chacha20_poly1305_encrypt (
    const uint8_t *aad, const uint64_t aad_len, const uint8_t *key,
    const uint8_t *nonce, const uint8_t *plaintext,
    const uint64_t plaintext_len, uint8_t *cipher_out, uint8_t *mac_out);

/// Decrypts and verifies an AEAD-ChaCha20-Poly1305 frame
bool tct_aead_chacha20_poly1305_decrypt_and_verify (
    const uint8_t *aad, const uint64_t aad_len, const uint8_t *key,
    const uint8_t *nonce, const uint8_t *frame, const uint64_t ciphertext_len,
    uint8_t *plaintext_out);

#endif