- markus@cvs.openbsd.org 2013/12/06 13:39:49
[authfd.c authfile.c key.c key.h myproposal.h pathnames.h readconf.c]
[servconf.c ssh-agent.c ssh-keygen.c ssh-keyscan.1 ssh-keyscan.c]
[ssh-keysign.c ssh.c ssh_config.5 sshd.8 sshd.c verify.c ssh-ed25519.c]
[sc25519.h sc25519.c hash.c ge25519_base.data ge25519.h ge25519.c]
[fe25519.h fe25519.c ed25519.c crypto_api.h blocks.c]
support ed25519 keys (hostkeys and user identities) using the public
domain ed25519 reference code from SUPERCOP, see
http://ed25519.cr.yp.to/software.html
feedback, help & ok djm@
diff --git a/sc25519.h b/sc25519.h
new file mode 100644
index 0000000..9537b76
--- /dev/null
+++ b/sc25519.h
@@ -0,0 +1,76 @@
+/* $OpenBSD: */
+
+/* Public Domain, from supercop-20130419/crypto_sign/ed25519/ref/sc25519.h */
+
+#ifndef SC25519_H
+#define SC25519_H
+
+#include "crypto_api.h"
+
+#define sc25519 crypto_sign_ed25519_ref_sc25519
+#define shortsc25519 crypto_sign_ed25519_ref_shortsc25519
+#define sc25519_from32bytes crypto_sign_ed25519_ref_sc25519_from32bytes
+#define shortsc25519_from16bytes crypto_sign_ed25519_ref_shortsc25519_from16bytes
+#define sc25519_from64bytes crypto_sign_ed25519_ref_sc25519_from64bytes
+#define sc25519_from_shortsc crypto_sign_ed25519_ref_sc25519_from_shortsc
+#define sc25519_to32bytes crypto_sign_ed25519_ref_sc25519_to32bytes
+#define sc25519_iszero_vartime crypto_sign_ed25519_ref_sc25519_iszero_vartime
+#define sc25519_isshort_vartime crypto_sign_ed25519_ref_sc25519_isshort_vartime
+#define sc25519_lt_vartime crypto_sign_ed25519_ref_sc25519_lt_vartime
+#define sc25519_add crypto_sign_ed25519_ref_sc25519_add
+#define sc25519_sub_nored crypto_sign_ed25519_ref_sc25519_sub_nored
+#define sc25519_mul crypto_sign_ed25519_ref_sc25519_mul
+#define sc25519_mul_shortsc crypto_sign_ed25519_ref_sc25519_mul_shortsc
+#define sc25519_window3 crypto_sign_ed25519_ref_sc25519_window3
+#define sc25519_window5 crypto_sign_ed25519_ref_sc25519_window5
+#define sc25519_2interleave2 crypto_sign_ed25519_ref_sc25519_2interleave2
+
+typedef struct
+{
+ crypto_uint32 v[32];
+}
+sc25519;
+
+typedef struct
+{
+ crypto_uint32 v[16];
+}
+shortsc25519;
+
+void sc25519_from32bytes(sc25519 *r, const unsigned char x[32]);
+
+void shortsc25519_from16bytes(shortsc25519 *r, const unsigned char x[16]);
+
+void sc25519_from64bytes(sc25519 *r, const unsigned char x[64]);
+
+void sc25519_from_shortsc(sc25519 *r, const shortsc25519 *x);
+
+void sc25519_to32bytes(unsigned char r[32], const sc25519 *x);
+
+int sc25519_iszero_vartime(const sc25519 *x);
+
+int sc25519_isshort_vartime(const sc25519 *x);
+
+int sc25519_lt_vartime(const sc25519 *x, const sc25519 *y);
+
+void sc25519_add(sc25519 *r, const sc25519 *x, const sc25519 *y);
+
+void sc25519_sub_nored(sc25519 *r, const sc25519 *x, const sc25519 *y);
+
+void sc25519_mul(sc25519 *r, const sc25519 *x, const sc25519 *y);
+
+void sc25519_mul_shortsc(sc25519 *r, const sc25519 *x, const shortsc25519 *y);
+
+/* Convert s into a representation of the form \sum_{i=0}^{84}r[i]2^3
+ * with r[i] in {-4,...,3}
+ */
+void sc25519_window3(signed char r[85], const sc25519 *s);
+
+/* Convert s into a representation of the form \sum_{i=0}^{50}r[i]2^5
+ * with r[i] in {-16,...,15}
+ */
+void sc25519_window5(signed char r[51], const sc25519 *s);
+
+void sc25519_2interleave2(unsigned char r[127], const sc25519 *s1, const sc25519 *s2);
+
+#endif