set6: challenge 43: completed

1 files changed, 25 insertions, 1 deletions

diff --git a/lib/lib6.h b/lib/lib6.h
index 23741b0..88fc530 100644
--- a/lib/lib6.h
+++ b/lib/lib6.h
@@ -8,9 +8,33 @@
 #include "lib.h"
 
 
+struct dsa_public_params {
+	BIGNUM *p;
+	BIGNUM *q;
+	BIGNUM *g;
+	unsigned int bits;
+};
+
+struct dsa_per_user_param {
+	BIGNUM *public;
+	BIGNUM *private;
+	// signature data here also because they should not be here
+	BIGNUM *r;
+	BIGNUM *s;
+};
+
+
 int rsa_sign_bignum(BIGNUM *message, BIGNUM *signed_message, struct rsa_key_bignum *private);
 int rsa_verify_bignum(BIGNUM *signed_message, BIGNUM *org_message, struct rsa_key_bignum *public);
 int shitty_pkcs1_5_padding_verify(char *to_verify, int len, char *message);
 int pkcs1_5_padding_verify(char *to_verify, int len, char *message);
-
+void init_dsa_pub_param(struct dsa_public_params *p);
+void dsa_compute_per_user_keys(struct dsa_public_params *pub_param, struct
+		dsa_per_user_param *priv_param);
+void dsa_sign(char *mess, struct dsa_public_params *pub_param, struct dsa_per_user_param
+		*priv_param, BIGNUM *k);
+int dsa_verify(char *mess, struct dsa_public_params *pub, struct dsa_per_user_param
+		*priv);
+void dsa_recover_x_from_known_k(struct dsa_public_params *pub, BIGNUM *k,
+		struct dsa_per_user_param *priv, BIGNUM *mess_hash);
 #endif /* __LIB_6_H__ */