diff options
author | Jack Lloyd <[email protected]> | 2018-12-10 08:26:45 -0500 |
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committer | Jack Lloyd <[email protected]> | 2018-12-10 08:26:45 -0500 |
commit | 29fbcceaf4d46b13dc78018863dd157000117fe9 (patch) | |
tree | f335236a9c584241c08a1bf3fffcb9795b2607b9 /src/tests | |
parent | da6fda36e106404482db9cefdc6ef947a160dcb1 (diff) | |
parent | b5bdefe234f6ea07b57c5bebfc06221298295e88 (diff) |
Merge GH #1784 Add ECDSA pubkey recovery
Diffstat (limited to 'src/tests')
-rw-r--r-- | src/tests/data/pubkey/ecdsa_key_recovery.vec | 16 | ||||
-rw-r--r-- | src/tests/test_ecdsa.cpp | 50 |
2 files changed, 66 insertions, 0 deletions
diff --git a/src/tests/data/pubkey/ecdsa_key_recovery.vec b/src/tests/data/pubkey/ecdsa_key_recovery.vec new file mode 100644 index 000000000..c753d0bdb --- /dev/null +++ b/src/tests/data/pubkey/ecdsa_key_recovery.vec @@ -0,0 +1,16 @@ + +Group = secp256k1 +R = 0xE30F2E6A0F705F4FB5F8501BA79C7C0D3FAC847F1AD70B873E9797B17B89B390 +S = 0x81F1A4457589F30D76AB9F89E748A68C8A94C30FE0BAC8FB5C0B54EA70BF6D2F +Msg = FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF +V = 0 +PubkeyX = 0xF3F8BB913AA68589A2C8C607A877AB05252ADBD963E1BE846DDEB8456942AEDC +PubkeyY = 0xA2ED51F08CA3EF3DAC0A7504613D54CD539FC1B3CBC92453CD704B6A2D012B2C + +Group = secp256r1 +R = 0x2AC979EB6C7502A49CACC0995A2B9C50192F334B742573767ADD6DCB01343D50 +S = 0xF444D29AFCA529A0A96467DAA5E881B1C60C73273E099DF7C910BD4EED0502D6 +V = 1 +Msg = 3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E3E +PubkeyX = 0x89F5662F5D9DE780184E3A2E1D170D6D30FF28F03E030C9CA99F3DB670E5DBB8 +PubkeyY = 0xEDDB57C7ACA9711D3CF67A2699792F76EE15A8129449D8A450D371CEFF2E00C7 diff --git a/src/tests/test_ecdsa.cpp b/src/tests/test_ecdsa.cpp index 68369fe1e..e1819fe1a 100644 --- a/src/tests/test_ecdsa.cpp +++ b/src/tests/test_ecdsa.cpp @@ -152,6 +152,56 @@ class ECDSA_Keygen_Tests final : public PK_Key_Generation_Test } }; +#if defined(BOTAN_HAS_EMSA_RAW) + +class ECDSA_Key_Recovery_Tests final : public Text_Based_Test + { + public: + ECDSA_Key_Recovery_Tests() : + Text_Based_Test("pubkey/ecdsa_key_recovery.vec", "Group,Msg,R,S,V,PubkeyX,PubkeyY") {} + + Test::Result run_one_test(const std::string&, const VarMap& vars) override + { + Test::Result result("ECDSA key recovery"); + + const std::string group_id = vars.get_req_str("Group"); + Botan::EC_Group group(group_id); + + const BigInt R = vars.get_req_bn("R"); + const BigInt S = vars.get_req_bn("S"); + const uint8_t V = vars.get_req_u8("V"); + const std::vector<uint8_t> msg = vars.get_req_bin("Msg"); + const BigInt pubkey_x = vars.get_req_bn("PubkeyX"); + const BigInt pubkey_y = vars.get_req_bn("PubkeyY"); + + try + { + Botan::ECDSA_PublicKey pubkey(group, msg, R, S, V); + result.test_eq("Pubkey X coordinate", pubkey.public_point().get_affine_x(), pubkey_x); + result.test_eq("Pubkey Y coordinate", pubkey.public_point().get_affine_y(), pubkey_y); + + const uint8_t computed_V = pubkey.recovery_param(msg, R, S); + result.test_eq("Recovery param is correct", static_cast<size_t>(computed_V), static_cast<size_t>(V)); + + Botan::PK_Verifier verifier(pubkey, "Raw"); + + auto sig = Botan::BigInt::encode_fixed_length_int_pair(R, S, group.get_order_bytes()); + + result.confirm("Signature verifies", verifier.verify_message(msg, sig)); + } + catch(Botan::Exception& e) + { + result.test_failure("Failed to recover ECDSA public key", e.what()); + } + + return result; + } + }; + +BOTAN_REGISTER_TEST("ecdsa_key_recovery", ECDSA_Key_Recovery_Tests); + +#endif + class ECDSA_Invalid_Key_Tests final : public Text_Based_Test { public: |