[bls] add the bls curve to the curves handled

- gen pk - sign - parsable in operations
trilitech · Oct 17, 2024 · 9823975 · 9823975
1 parent 8183e5a
commit 9823975
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Showing 4 changed files with 45 additions and 2 deletions.
diff --git a/src/keys.c b/src/keys.c
@@ -21,6 +21,7 @@
 
 #include "crypto_helpers.h"
 
+#include "crypto.h"
 #include "keys.h"
 
 /***** Bip32 path *****/
@@ -79,6 +80,14 @@ cx_err_t generate_public_key(cx_ecfp_public_key_t *public_key,
                                                  CX_SHA512));
             break;
         }
+        case DERIVATION_TYPE_BLS12_381: {
+            public_key->curve = CX_CURVE_BLS12_381_G1;
+            public_key->W_len = 97;
+            CX_CHECK(bip32_derive_get_pubkey_bls(bip32_path->components,
+                                                 bip32_path->length,
+                                                 ((cx_ecfp_384_public_key_t *) public_key)->W));
+            break;
+        }
         default:
             return CX_INVALID_PARAMETER;
     }
@@ -132,6 +141,12 @@ static cx_err_t public_key_hash(uint8_t *const hash_out,
             compressed->W[0] = 0x02 + (public_key->W[64] & 0x01);
             break;
         }
+        case DERIVATION_TYPE_BLS12_381: {
+            compressed->curve = public_key->curve;
+            compressed->W_len = 48;
+            memcpy(compressed->W, public_key->W + 1, compressed->W_len);
+            break;
+        }
         default:
             return CX_INVALID_PARAMETER;
     }
@@ -232,6 +247,16 @@ cx_err_t sign(uint8_t *const out,
                 out[0] |= 0x01;
             }
         } break;
+#ifndef TARGET_NANOS
+        case DERIVATION_TYPE_BLS12_381: {
+            CX_CHECK(bip32_derive_with_seed_bls_sign_hash(bip32_path->components,
+                                                          bip32_path->length,
+                                                          (uint8_t const *) PIC(in),
+                                                          in_size,
+                                                          out,
+                                                          out_size));
+        } break;
+#endif
         default:
             error = CX_INVALID_PARAMETER;
     }

diff --git a/src/keys.h b/src/keys.h
@@ -45,14 +45,16 @@ typedef enum {
     DERIVATION_TYPE_SECP256K1 = 0x01,
     DERIVATION_TYPE_SECP256R1 = 0x02,
     DERIVATION_TYPE_BIP32_ED25519 = 0x03,
-    DERIVATION_TYPE_UNSET = 0x04
+    DERIVATION_TYPE_BLS12_381 = 0x04,
+    DERIVATION_TYPE_UNSET = 0x05
 } derivation_type_t;
 
 typedef enum {
     SIGNATURE_TYPE_ED25519 = 0,
     SIGNATURE_TYPE_SECP256K1 = 1,
     SIGNATURE_TYPE_SECP256R1 = 2,
-    SIGNATURE_TYPE_UNSET = 3
+    SIGNATURE_TYPE_BLS12_381 = 3,
+    SIGNATURE_TYPE_UNSET = 4
 } signature_type_t;
 
 #define DERIVATION_TYPE_IS_SET(type) \
@@ -77,6 +79,8 @@ static inline signature_type_t derivation_type_to_signature_type(
         case DERIVATION_TYPE_ED25519:
         case DERIVATION_TYPE_BIP32_ED25519:
             return SIGNATURE_TYPE_ED25519;
+        case DERIVATION_TYPE_BLS12_381:
+            return SIGNATURE_TYPE_BLS12_381;
         default:
             return SIGNATURE_TYPE_UNSET;
     }
@@ -188,6 +192,7 @@ static inline bool bip32_path_with_curve_eq(bip32_path_with_curve_t volatile con
  */
 typedef union {
     cx_ecfp_256_public_key_t pk_256;  ///< edpk, sppk and p2pk keys
+    cx_ecfp_384_public_key_t pk_384;  ///< BLpk keys
 } tz_ecfp_public_key_t;
 
 /**
@@ -212,12 +217,19 @@ typedef struct {
     size_t W_len;      ///< Compressed public key length in bytes
     uint8_t W[33];     ///< Compressed public key value
 } tz_ecfp_secp256_compressed_public_key_t;
+/** BLS compressed public key */
+typedef struct {
+    cx_curve_t curve;  ///< Curve identifier
+    size_t W_len;      ///< Compressed public key length in bytes
+    uint8_t W[48];     ///< Compressed public key value
+} tz_ecfp_bls_compressed_public_key_t;
 /**
  * @brief This structure represents elliptic curve compressed public key handled
  */
 typedef union {
     tz_ecfp_ed25519_compressed_public_key_t pk_ed25519;  ///< edpk keys
     tz_ecfp_secp256_compressed_public_key_t pk_secp256;  ///< sppk and p2pk keys
+    tz_ecfp_bls_compressed_public_key_t pk_bls;          ///< BLpk keys
 } tz_ecfp_compressed_public_key_t;
 
 /**

diff --git a/src/operations.h b/src/operations.h
@@ -64,6 +64,7 @@ union public_key {
     uint8_t edpk[32];  ///< raw public key for a edpk key
     uint8_t sppk[33];  ///< raw public key for a sppk key
     uint8_t p2pk[33];  ///< raw public key for a p2pk key
+    uint8_t blpk[48];  ///< raw public key for a BLpk key
 } __attribute__((packed));
 
 /**

diff --git a/src/to_string.c b/src/to_string.c
@@ -121,6 +121,11 @@ static int pkh_to_string(char *const dest,
             data.prefix[1] = 161u;
             data.prefix[2] = 164u;
             break;
+        case SIGNATURE_TYPE_BLS12_381:
+            data.prefix[0] = 6u;
+            data.prefix[1] = 161u;
+            data.prefix[2] = 166u;
+            break;
         default:
             return -1;
     }