Implemented. (pkcs7_clearsign): Implemented. (get_zero_len_passwd):

Implemented. (pkcs7_clearsign): Implemented. (get_zero_len_passwd):

2001-04-19  Jeffrey Stedfast  <fejj@ximian.com>

	* camel-pkcs7-context.c (pkcs7_sign): Implemented.
	(pkcs7_clearsign): Implemented.
	(get_zero_len_passwd): Convenience function to try a 0-length key
	on the certificate db - if this works then there is no need to
	prompt the user.
	(get_password): Callback to get the password.
	(camel_cipher_hash_to_nss): Convenience function to convert a
	CamelCipherHash to an NSS HASH_HashType.
	(nss_hash_to_sec_oid): Converts a HASH_HashType to a SecOidTag.
	(pkcs7_digest): Digest function for use with pkcs7_sign().
	(sign_encode_cb): Callback to write the signed data to the output
	stream.
	(pkcs7_verify): Hacked on a bit more but am still a bit on the
	confused side. This might work but I wouldn't hold my breath. The
	sign/clearsign should be close if not correct, but this one...god
	only knows.
	(pkcs7_decrypt): Implemented.
	(pkcs7_encrypt): Implemented (mostly, still need to handle when
	'sign' is TRUE).