mbedtls_sha256() function

This function calculates the SHA-224 or SHA-256 checksum of a buffer. The function allocates the context, performs the calculation, and frees the context. The SHA-256 result is calculated as output = SHA-256(input buffer).

Syntax

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Summary

Declaration

Definition

from sha256.h:167

int mbedtls_sha256(const unsigned char *input, size_t ilen, unsigned char *output, int is224);

Implemented in sha256.c:773

Arguments

Argument

Description

input

The buffer holding the data. This must be a readable buffer of length \p ilen Bytes.

ilen

The length of the input data in Bytes.

output

The SHA-224 or SHA-256 checksum result. This must be a writable buffer of length \c 32 bytes for SHA-256, \c 28 bytes for SHA-224.

is224

Determines which function to use. This must be either \c 0 for SHA-256, or \c 1 for SHA-224.

Return value

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

Examples

mbedtls_sha256() is referenced by 2 libraries and example projects:

References

from examples

mbedtls_sha256() function

Syntax

Arguments

Return value

Examples

References

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