Patrick Monnerat f915a31a4d Feature an optional crypto-specific macro to rsa sign a data fragment vector ...

OS/400 crypto library is unable to sign a precomputed SHA1 hash: however
it does support a procedure that hashes data fragments and rsa signs.
If defined, the new macro _libssh2_rsa_sha1_signv() implements this function
and disables use of _libssh2_rsa_sha1_sign().

The function described above requires that the struct iovec unused slacks are
cleared: for this reason, macro libssh2_prepare_iovec() has been introduced.
It should be defined as empty for crypto backends that are not sensitive
to struct iovec unused slack values.

2016-01-18 13:35:28 +01:00

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