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psa_util: update documentation for mbedtls_ecdsa_raw_to_der()

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Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
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Valerio Setti 2024-02-07 15:03:33 +01:00
parent 1810fd9ac8
commit affba30833
1 changed files with 7 additions and 6 deletions
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13
include/mbedtls/psa_util.h
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@ -192,12 +192,13 @@ static inline mbedtls_md_type_t mbedtls_md_type_from_psa_alg(psa_algorithm_t psa
* PSA_BITS_TO_BYTES(bits) bytes.
* \param[out] der Buffer that will be filled with the converted DER
* output. It can overlap with raw buffer.
* \param der_size Size of \p der in bytes. Given \p bits parameter:
* * #MBEDTLS_ECDSA_MAX_SIG_LEN(\p bits) can be used
* to determine a large enough buffer for any
* \p raw input vector.
* * The minimum size might be smaller in case
* \p raw input vector contains padding zeros.
* \param der_size Size of \p der in bytes. It is enough if \p der_size
* is at least the size of the actual output. (The size
* of the output can vary depending on the presence of
* leading zeros in the data.) You can use
* #MBEDTLS_ECDSA_MAX_SIG_LEN(\p bits) to determine a
* size that is large enough for all signatures for a
* given value of \p bits.
* \param[out] der_len On success it contains the amount of valid data
* (in bytes) written to \p der. It's undefined
* in case of failure.