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	/* Encode a message digest for use with the EdDSA algorithm	/* Encode a message digest for use with the EdDSA algorithm
	(i.e. curve Ed25519). */	(i.e. curve Ed25519). */
	static gpg_error_t	static gpg_error_t
	do_encode_eddsa (const byte md, size_t mdlen, gcry_sexp_t r_hash)	do_encode_eddsa (size_t nbits, const byte *md, size_t mdlen,
		gcry_sexp_t *r_hash)
	{	{
	gpg_error_t err;	gpg_error_t err;
	gcry_sexp_t hash;	gcry_sexp_t hash;
		const char *fmt;

		if (nbits == 448)
		fmt = "(data(value %b))";
		else
		fmt = "(data(flags eddsa)(hash-algo sha512)(value %b))";

	*r_hash = NULL;	*r_hash = NULL;
	err = gcry_sexp_build (&hash, NULL,	err = gcry_sexp_build (&hash, NULL, fmt, (int)mdlen, md);
	"(data(flags eddsa)(hash-algo sha512)(value %b))",
	(int)mdlen, md);
	if (!err)	if (!err)
	*r_hash = hash;	*r_hash = hash;
	return err;	return err;
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	/* Put the hash into a sexp */	/* Put the hash into a sexp */
	if (algo == GCRY_PK_EDDSA)	if (algo == GCRY_PK_EDDSA)
	err = do_encode_eddsa (data, datalen,	err = do_encode_eddsa (gcry_pk_get_nbits (s_skey), data, datalen,
	&s_hash);	&s_hash);
	else if (ctrl->digest.algo == MD_USER_TLS_MD5SHA1)	else if (ctrl->digest.algo == MD_USER_TLS_MD5SHA1)
	err = do_encode_raw_pkcs1 (data, datalen,	err = do_encode_raw_pkcs1 (data, datalen,
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