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[ecdsa] fix ECDSA public key size for DNSKEY (#5989)

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Per Sec 4 of RFC 6605:
"ECDSA public keys consist of a single value, called "Q" in FIPS
186-3.  In DNSSEC keys, Q is a simple bit string that represents the
uncompressed form of a curve point, "x | y"."

The bit string of the two curve points (X, Y) should have a fixed
length of 64 bytes and the additional `1` byte prefix should not be
included, because only uncompressed form is allowed.
This commit is contained in:
kangping
2020-12-21 09:59:50 -08:00
committed by GitHub
parent a3a76f1ea3
commit fe98fdc2d1
3 changed files with 14 additions and 10 deletions
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tests/unit/test_ecdsa.cpp
+4 -4
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@@ -58,10 +58,10 @@ void TestEcdsaVector(void)
0xB2, 0x0C, 0x2D, 0x7E, 0x9F, 0x51, 0x77, 0xA3, 0xC2, 0x94, 0xD4, 0x46, 0x22, 0x99};
const uint8_t kPublicKey[] = {
0x04, 0x60, 0xFE, 0xD4, 0xBA, 0x25, 0x5A, 0x9D, 0x31, 0xC9, 0x61, 0xEB, 0x74, 0xC6, 0x35, 0x6D, 0x68,
0xC0, 0x49, 0xB8, 0x92, 0x3B, 0x61, 0xFA, 0x6C, 0xE6, 0x69, 0x62, 0x2E, 0x60, 0xF2, 0x9F, 0xB6, 0x79,
0x03, 0xFE, 0x10, 0x08, 0xB8, 0xBC, 0x99, 0xA4, 0x1A, 0xE9, 0xE9, 0x56, 0x28, 0xBC, 0x64, 0xF2, 0xF1,
0xB2, 0x0C, 0x2D, 0x7E, 0x9F, 0x51, 0x77, 0xA3, 0xC2, 0x94, 0xD4, 0x46, 0x22, 0x99,
0x60, 0xFE, 0xD4, 0xBA, 0x25, 0x5A, 0x9D, 0x31, 0xC9, 0x61, 0xEB, 0x74, 0xC6, 0x35, 0x6D, 0x68,
0xC0, 0x49, 0xB8, 0x92, 0x3B, 0x61, 0xFA, 0x6C, 0xE6, 0x69, 0x62, 0x2E, 0x60, 0xF2, 0x9F, 0xB6,
0x79, 0x03, 0xFE, 0x10, 0x08, 0xB8, 0xBC, 0x99, 0xA4, 0x1A, 0xE9, 0xE9, 0x56, 0x28, 0xBC, 0x64,
0xF2, 0xF1, 0xB2, 0x0C, 0x2D, 0x7E, 0x9F, 0x51, 0x77, 0xA3, 0xC2, 0x94, 0xD4, 0x46, 0x22, 0x99,
};
const uint8_t kMessage[] = {'s', 'a', 'm', 'p', 'l', 'e'};