mbedtls_ecdsa_write_signature_restartable() function

The ECDSA context to use. This must be initialized and have a group and private key bound to it, for example via mbedtls_ecdsa_genkey() or mbedtls_ecdsa_from_keypair().

The message digest that was used to hash the message.

The message hash to be signed. This must be a readable buffer of length \p blen Bytes.

The length of the hash \p hash in Bytes.

The buffer to which to write the signature. This must be a writable buffer of length at least twice as large as the size of the curve used, plus 9. For example, 73 Bytes if a 256-bit curve is used. A buffer length of #MBEDTLS_ECDSA_MAX_LEN is always safe.

The address at which to store the actual length of the signature written. Must not be \c NULL.

The RNG function. This must not be \c NULL if #MBEDTLS_ECDSA_DETERMINISTIC is unset. Otherwise, it is unused and may be set to \c NULL.

The RNG context to be passed to \p f_rng. This may be \c NULL if \p f_rng is \c NULL or doesn't use a context.

The restart context to use. This may be \c NULL to disable restarting. If it is not \c NULL, it must point to an initialized restart context.

This function frees the components of a key pair.

This function frees an ECDSA context.

This function initializes an ECDSA context.

This function initializes a key pair as an invalid one.

This function sets up an ECDSA context from an EC key pair. \see ecp.h

This function computes the ECDSA signature and writes it to a buffer, serialized as defined in RFC-4492: Elliptic Curve Cryptography (ECC) Cipher Suites for Transport Layer Security (TLS). \warning It is not thread-safe to use the same context in multiple threads. \see ecp.h

This function reads and verifies an ECDSA signature. \see ecp.h

This function reads and verifies an ECDSA signature, in a restartable way. \see \c mbedtls_ecdsa_read_signature()

This function checks that the keypair objects \p pub and \p prv have the same group and the same public point, and that the private key in \p prv is consistent with the public key.

This function sets up an ECDH context from an EC key. It is used by clients and servers in place of the ServerKeyEchange for static ECDH, and imports ECDH parameters from the EC key information of a certificate. \see ecp.h

This function generates an ECDSA keypair on the given curve. \see ecp.h

This function generates an ECP key.