mbedtls_poly1305_mac() function

This function calculates the Poly1305 MAC of the input buffer with the provided key. \warning The key must be unique and unpredictable for each invocation of Poly1305.

Syntax

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Summary

Declaration

from poly1305.h:149

int mbedtls_poly1305_mac(const unsigned char key[32], const unsigned char *input, size_t ilen, unsigned char mac[16]);

Arguments

Argument

Description

key

The buffer containing the \c 32 Byte (\c 256 Bit) key.

input

The buffer holding the input data. This pointer can be \c NULL if `ilen == 0`.

ilen

The length of the input data in Bytes. Any value is accepted.

mac

The buffer to where the MAC is written. This must be a writable buffer of length \c 16 Bytes.

Return value

\c 0 on success. A negative error code on failure.

References

Code

Location

int mbedtls_poly1305_mac(const unsigned char key[32],

poly1305.h:149

mbedtls_poly1305_mac() function

Syntax

Arguments

Return value

Examples

References

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