Bump IETF BLS spec version draft 03 -> draft 04

ethereum · Sep 25, 2020 · ad4ad2d · ad4ad2d
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diff --git a/specs/phase0/beacon-chain.md b/specs/phase0/beacon-chain.md
@@ -603,7 +603,7 @@ def bytes_to_uint64(data: bytes) -> uint64:
 
 #### BLS Signatures
 
-Eth2 makes use of BLS signatures as specified in the [IETF draft BLS specification draft-irtf-cfrg-bls-signature-03](https://tools.ietf.org/html/draft-irtf-cfrg-bls-signature-03). Specifically, eth2 uses the `BLS_SIG_BLS12381G2_XMD:SHA-256_SSWU_RO_POP_` ciphersuite which implements the following interfaces:
+Eth2 makes use of BLS signatures as specified in the [IETF draft BLS specification draft-irtf-cfrg-bls-signature-04](https://tools.ietf.org/html/draft-irtf-cfrg-bls-signature-04). Specifically, eth2 uses the `BLS_SIG_BLS12381G2_XMD:SHA-256_SSWU_RO_POP_` ciphersuite which implements the following interfaces:
 
 - `def Sign(SK: int, message: Bytes) -> BLSSignature`
 - `def Verify(PK: BLSPubkey, message: Bytes, signature: BLSSignature) -> bool`

diff --git a/tests/generators/bls/main.py b/tests/generators/bls/main.py
@@ -171,7 +171,7 @@ def case03_aggregate():
     # Invalid pubkeys -- len(pubkeys) == 0
     expect_exception(bls.Aggregate, [])
     # No signatures to aggregate. Follow IETF BLS spec, return `None` to represent INVALID.
-    # https://tools.ietf.org/html/draft-irtf-cfrg-bls-signature-02#section-2.8
+    # https://tools.ietf.org/html/draft-irtf-cfrg-bls-signature-04#section-2.8
     yield f'aggregate_na_signatures', {
         'input': [],
         'output': None,