Merge pull request #1813 from ethereum/bls_v2_tests
Update BLS test suite to BLS standard draft v2 format
This commit is contained in:
Danny Ryan
GitHub
commit
4ffafa56dd
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@ -25,17 +25,32 @@ def only_with_bls(alt_return=None):
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@only_with_bls(alt_return=True)
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def Verify(PK, message, signature):
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return bls.Verify(PK, message, signature)
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try:
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result = bls.Verify(PK, message, signature)
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except Exception:
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result = False
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finally:
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return result
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@only_with_bls(alt_return=True)
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def AggregateVerify(pubkeys, messages, signature):
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return bls.AggregateVerify(pubkeys, messages, signature)
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try:
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result = bls.AggregateVerify(pubkeys, messages, signature)
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except Exception:
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result = False
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finally:
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return result
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@only_with_bls(alt_return=True)
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def FastAggregateVerify(pubkeys, message, signature):
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return bls.FastAggregateVerify(pubkeys, message, signature)
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try:
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result = bls.FastAggregateVerify(pubkeys, message, signature)
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except Exception:
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result = False
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finally:
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return result
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@only_with_bls(alt_return=STUB_SIGNATURE)
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@ -56,3 +71,8 @@ def signature_to_G2(signature):
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@only_with_bls(alt_return=STUB_PUBKEY)
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def AggregatePKs(pubkeys):
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return bls._AggregatePKs(pubkeys)
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@only_with_bls(alt_return=STUB_SIGNATURE)
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def SkToPk(SK):
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return bls.SkToPk(SK)
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@ -5,11 +5,10 @@ We do not recommend rolling your own crypto or using an untested BLS library.
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The BLS test suite runner has the following handlers:
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- [`aggregate_pubkeys`](./aggregate_pubkeys.md)
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- [`aggregate_sigs`](./aggregate_sigs.md)
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- [`msg_hash_g2_compressed`](./msg_hash_g2_compressed.md)
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- [`msg_hash_g2_uncompressed`](./msg_hash_g2_uncompressed.md)
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- [`priv_to_pub`](./priv_to_pub.md)
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- [`sign_msg`](./sign_msg.md)
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- [`aggregate_verify`](./aggregate_verify.md)
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- [`aggregate`](./aggregate.md)
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- [`fast_aggregate_verify`](./fast_aggregate_verify.md)
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- [`sign`](./sign.md)
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- [`verify`](./verify.md)
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*Note*: Signature-verification and aggregate-verify test cases are not yet supported.
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@ -0,0 +1,19 @@
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# Test format: BLS signature aggregation
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A BLS signature aggregation combines a series of signatures into a single signature.
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## Test case format
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The test data is declared in a `data.yaml` file:
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```yaml
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input: List[BLS Signature] -- list of input BLS signatures
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output: BLS Signature -- expected output, single BLS signature or empty.
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```
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- `BLS Signature` here is encoded as a string: hexadecimal encoding of 96 bytes (192 nibbles), prefixed with `0x`.
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- No output value if the input is invalid.
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## Condition
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The `aggregate` handler should aggregate the signatures in the `input`, and the result should match the expected `output`.
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@ -1,19 +0,0 @@
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# Test format: BLS pubkey aggregation
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A BLS pubkey aggregation combines a series of pubkeys into a single pubkey.
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## Test case format
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The test data is declared in a `data.yaml` file:
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```yaml
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input: List[BLS Pubkey] -- list of input BLS pubkeys
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output: BLS Pubkey -- expected output, single BLS pubkey
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```
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`BLS Pubkey` here is encoded as a string: hexadecimal encoding of 48 bytes (96 nibbles), prefixed with `0x`.
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## Condition
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The `aggregate_pubkeys` handler should aggregate the keys in the `input`, and the result should match the expected `output`.
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@ -1,19 +0,0 @@
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# Test format: BLS signature aggregation
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A BLS signature aggregation combines a series of signatures into a single signature.
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## Test case format
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The test data is declared in a `data.yaml` file:
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```yaml
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input: List[BLS Signature] -- list of input BLS signatures
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output: BLS Signature -- expected output, single BLS signature
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```
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`BLS Signature` here is encoded as a string: hexadecimal encoding of 96 bytes (192 nibbles), prefixed with `0x`.
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## Condition
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The `aggregate_sigs` handler should aggregate the signatures in the `input`, and the result should match the expected `output`.
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@ -0,0 +1,17 @@
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# Test format: BLS sign message
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Verify the signature against the given pubkeys and one messages.
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## Test case format
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The test data is declared in a `data.yaml` file:
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```yaml
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input:
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pubkeys: List[bytes48] -- the pubkeys
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messages: List[bytes32] -- the messages
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signature: bytes96 -- the signature to verify against pubkeys and messages
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output: bool -- VALID or INVALID
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```
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All byte(s) fields are encoded as strings, hexadecimal encoding, prefixed with `0x`.
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@ -0,0 +1,17 @@
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# Test format: BLS sign message
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Verify the signature against the given pubkeys and one message.
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## Test case format
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The test data is declared in a `data.yaml` file:
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```yaml
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input:
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pubkeys: List[bytes48] -- the pubkey
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message: bytes32 -- the message
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signature: bytes96 -- the signature to verify against pubkeys and message
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output: bool -- VALID or INVALID
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```
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All byte(s) fields are encoded as strings, hexadecimal encoding, prefixed with `0x`.
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@ -1,21 +0,0 @@
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# Test format: BLS hash-compressed
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A BLS compressed-hash to G2.
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## Test case format
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The test data is declared in a `data.yaml` file:
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```yaml
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input:
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message: bytes32
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domain: bytes8 -- the BLS domain
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output: List[bytes48] -- length of two
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```
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All byte(s) fields are encoded as strings, hexadecimal encoding, prefixed with `0x`.
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## Condition
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The `msg_hash_g2_compressed` handler should hash the `message`, with the given `domain`, to G2 with compression, and the result should match the expected `output`.
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@ -1,21 +0,0 @@
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# Test format: BLS hash-uncompressed
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A BLS uncompressed-hash to G2.
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## Test case format
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The test data is declared in a `data.yaml` file:
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```yaml
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input:
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message: bytes32
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domain: bytes8 -- the BLS domain
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output: List[List[bytes48]] -- 3 lists, each a length of two
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```
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All byte(s) fields are encoded as strings, hexadecimal encoding, prefixed with `0x`.
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## Condition
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The `msg_hash_g2_uncompressed` handler should hash the `message`, with the given `domain`, to G2, without compression, and the result should match the expected `output`.
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@ -1,19 +0,0 @@
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# Test format: BLS private key to pubkey
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A BLS private key to public key conversion.
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## Test case format
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The test data is declared in a `data.yaml` file:
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```yaml
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input: bytes32 -- the private key
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output: bytes48 -- the public key
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```
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All byte(s) fields are encoded as strings, hexadecimal encoding, prefixed with `0x`.
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## Condition
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The `priv_to_pub` handler should compute the public key for the given private key `input`, and the result should match the expected `output`.
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@ -10,13 +10,7 @@ The test data is declared in a `data.yaml` file:
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input:
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privkey: bytes32 -- the private key used for signing
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message: bytes32 -- input message to sign (a hash)
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domain: bytes8 -- the BLS domain
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output: bytes96 -- expected signature
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```
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All byte(s) fields are encoded as strings, hexadecimal encoding, prefixed with `0x`.
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## Condition
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The `sign_msg` handler should sign the given `message`, with `domain`, using the given `privkey`, and the result should match the expected `output`.
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@ -0,0 +1,17 @@
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# Test format: BLS sign message
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Verify the signature against the given one pubkey and one message.
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## Test case format
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The test data is declared in a `data.yaml` file:
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```yaml
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input:
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pubkey: bytes48 -- the pubkey
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message: bytes32 -- the message
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signature: bytes96 -- the signature to verify against pubkey and message
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output: bool -- VALID or INVALID
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```
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All byte(s) fields are encoded as strings, hexadecimal encoding, prefixed with `0x`.
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@ -1,21 +1,11 @@
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# BLS Test Generator
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Explanation of BLS12-381 type hierarchy
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The base unit is bytes48 of which only 381 bits are used
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The [BLS Signature APIs](../../../specs/phase0/beacon-chain.md#bls-signatures)
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- FQ: uint381 modulo field modulus
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- FQ2: (FQ, FQ)
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- G2: (FQ2, FQ2, FQ2)
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Information on the format of the tests can be found in the [BLS test formats documentation](../../formats/bls/README.md).
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## Resources
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- [Eth2 spec](../../../specs/phase0/beacon-chain.md#bls-signatures)
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- [IETF BLS Signature Scheme](https://datatracker.ietf.org/doc/draft-irtf-cfrg-bls-signature/)
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- [Finite Field Arithmetic](http://www.springeronline.com/sgw/cda/pageitems/document/cda_downloaddocument/0,11996,0-0-45-110359-0,00.pdf)
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- Chapter 2 of [Elliptic Curve Cryptography](http://cacr.uwaterloo.ca/ecc/). Darrel Hankerson, Alfred Menezes, and Scott Vanstone
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- [Zcash BLS parameters](https://github.com/zkcrypto/pairing/tree/master/src/bls12_381)
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- [Trinity implementation](https://github.com/ethereum/trinity/blob/master/eth2/_utils/bls.py)
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## Comments
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Compared to Zcash, Ethereum specs always requires the compressed form (c_flag / most significant bit always set).
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Also note that pubkeys and privkeys are reversed.
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@ -10,20 +10,16 @@ from eth_utils import (
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)
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from gen_base import gen_runner, gen_typing
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from py_ecc import bls
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from eth2spec.utils import bls
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from hashlib import sha256
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from eth2spec.test.context import PHASE0
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def hash(x):
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return sha256(x).digest()
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F2Q_COEFF_LEN = 48
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G2_COMPRESSED_Z_LEN = 48
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DST = bls.G2ProofOfPossession.DST
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def int_to_hex(n: int, byte_length: int = None) -> str:
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byte_value = int_to_big_endian(n)
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if byte_length:
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@ -49,11 +45,15 @@ PRIVKEYS = [
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hex_to_int('0x00000000000000000000000000000000328388aff0d4a5b7dc9205abd374e7e98f3cd9f3418edb4eafda5fb16473d216'),
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]
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Z1_PUBKEY = b'\xc0' + b'\x00' * 47
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NO_SIGNATURE = b'\x00' * 96
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Z2_SIGNATURE = b'\xc0' + b'\x00' * 95
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def case01_sign():
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for privkey in PRIVKEYS:
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for message in MESSAGES:
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sig = bls.G2ProofOfPossession.Sign(privkey, message)
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sig = bls.Sign(privkey, message)
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identifier = f'{int_to_hex(privkey)}_{encode_hex(message)}'
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yield f'sign_case_{(hash(bytes(identifier, "utf-8"))[:8]).hex()}', {
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'input': {
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@ -68,9 +68,10 @@ def case02_verify():
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for i, privkey in enumerate(PRIVKEYS):
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for message in MESSAGES:
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# Valid signature
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signature = bls.G2ProofOfPossession.Sign(privkey, message)
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pubkey = bls.G2ProofOfPossession.SkToPk(privkey)
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signature = bls.Sign(privkey, message)
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pubkey = bls.SkToPk(privkey)
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identifier = f'{encode_hex(pubkey)}_{encode_hex(message)}'
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assert bls.Verify(pubkey, message, signature)
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yield f'verify_valid_case_{(hash(bytes(identifier, "utf-8"))[:8]).hex()}', {
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'input': {
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'pubkey': encode_hex(pubkey),
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@ -81,8 +82,9 @@ def case02_verify():
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}
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# Invalid signatures -- wrong pubkey
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wrong_pubkey = bls.G2ProofOfPossession.SkToPk(PRIVKEYS[(i + 1) % len(PRIVKEYS)])
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wrong_pubkey = bls.SkToPk(PRIVKEYS[(i + 1) % len(PRIVKEYS)])
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identifier = f'{encode_hex(wrong_pubkey)}_{encode_hex(message)}'
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assert not bls.Verify(wrong_pubkey, message, signature)
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yield f'verify_wrong_pubkey_case_{(hash(bytes(identifier, "utf-8"))[:8]).hex()}', {
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'input': {
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'pubkey': encode_hex(wrong_pubkey),
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@ -95,6 +97,7 @@ def case02_verify():
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# Invalid signature -- tampered with signature
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tampered_signature = signature[:-4] + b'\xFF\xFF\xFF\xFF'
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identifier = f'{encode_hex(pubkey)}_{encode_hex(message)}'
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assert not bls.Verify(pubkey, message, tampered_signature)
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yield f'verify_tampered_signature_case_{(hash(bytes(identifier, "utf-8"))[:8]).hex()}', {
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'input': {
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'pubkey': encode_hex(pubkey),
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@ -104,26 +107,51 @@ def case02_verify():
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'output': False,
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}
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# Valid pubkey and signature with the point at infinity
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assert bls.Verify(Z1_PUBKEY, message, Z2_SIGNATURE)
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yield f'verify_infinity_pubkey_and_infinity_signature', {
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'input': {
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'pubkey': encode_hex(Z1_PUBKEY),
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'message': encode_hex(message),
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'signature': encode_hex(Z2_SIGNATURE),
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},
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'output': True,
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}
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def case03_aggregate():
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for message in MESSAGES:
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sigs = [bls.G2ProofOfPossession.Sign(privkey, message) for privkey in PRIVKEYS]
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sigs = [bls.Sign(privkey, message) for privkey in PRIVKEYS]
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yield f'aggregate_{encode_hex(message)}', {
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'input': [encode_hex(sig) for sig in sigs],
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'output': encode_hex(bls.G2ProofOfPossession.Aggregate(sigs)),
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'output': encode_hex(bls.Aggregate(sigs)),
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}
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# Invalid pubkeys -- len(pubkeys) == 0
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try:
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bls.Aggregate([])
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except Exception:
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pass
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else:
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raise Exception("Should have been INVALID")
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yield f'aggregate_na_pubkeys', {
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'input': [],
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'output': None,
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}
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def case04_fast_aggregate_verify():
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for i, message in enumerate(MESSAGES):
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privkeys = PRIVKEYS[:i + 1]
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sigs = [bls.G2ProofOfPossession.Sign(privkey, message) for privkey in privkeys]
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aggregate_signature = bls.G2ProofOfPossession.Aggregate(sigs)
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pubkeys = [bls.G2ProofOfPossession.SkToPk(privkey) for privkey in privkeys]
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sigs = [bls.Sign(privkey, message) for privkey in privkeys]
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aggregate_signature = bls.Aggregate(sigs)
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pubkeys = [bls.SkToPk(privkey) for privkey in privkeys]
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pubkeys_serial = [encode_hex(pubkey) for pubkey in pubkeys]
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# Valid signature
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identifier = f'{pubkeys_serial}_{encode_hex(message)}'
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assert bls.FastAggregateVerify(pubkeys, message, aggregate_signature)
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yield f'fast_aggregate_verify_valid_{(hash(bytes(identifier, "utf-8"))[:8]).hex()}', {
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'input': {
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'pubkeys': pubkeys_serial,
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@ -134,9 +162,10 @@ def case04_fast_aggregate_verify():
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}
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# Invalid signature -- extra pubkey
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pubkeys_extra = pubkeys + [bls.G2ProofOfPossession.SkToPk(PRIVKEYS[-1])]
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pubkeys_extra = pubkeys + [bls.SkToPk(PRIVKEYS[-1])]
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pubkeys_extra_serial = [encode_hex(pubkey) for pubkey in pubkeys_extra]
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identifier = f'{pubkeys_extra_serial}_{encode_hex(message)}'
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assert not bls.FastAggregateVerify(pubkeys_extra, message, aggregate_signature)
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yield f'fast_aggregate_verify_extra_pubkey_{(hash(bytes(identifier, "utf-8"))[:8]).hex()}', {
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'input': {
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'pubkeys': pubkeys_extra_serial,
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@ -149,6 +178,7 @@ def case04_fast_aggregate_verify():
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# Invalid signature -- tampered with signature
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tampered_signature = aggregate_signature[:-4] + b'\xff\xff\xff\xff'
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identifier = f'{pubkeys_serial}_{encode_hex(message)}'
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assert not bls.FastAggregateVerify(pubkeys, message, tampered_signature)
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yield f'fast_aggregate_verify_tampered_signature_{(hash(bytes(identifier, "utf-8"))[:8]).hex()}', {
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'input': {
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'pubkeys': pubkeys_serial,
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@ -158,37 +188,88 @@ def case04_fast_aggregate_verify():
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'output': False,
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}
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# Invalid pubkeys and signature -- len(pubkeys) == 0 and signature == Z1_SIGNATURE
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assert not bls.FastAggregateVerify([], message, Z2_SIGNATURE)
|
||||
yield f'fast_aggregate_verify_na_pubkeys_and_infinity_signature', {
|
||||
'input': {
|
||||
'pubkeys': [],
|
||||
'message': encode_hex(message),
|
||||
'signature': encode_hex(Z2_SIGNATURE),
|
||||
},
|
||||
'output': False,
|
||||
}
|
||||
|
||||
# Invalid pubkeys and signature -- len(pubkeys) == 0 and signature == 0x00...
|
||||
assert not bls.FastAggregateVerify([], message, NO_SIGNATURE)
|
||||
yield f'fast_aggregate_verify_na_pubkeys_and_na_signature', {
|
||||
'input': {
|
||||
'pubkeys': [],
|
||||
'message': encode_hex(message),
|
||||
'signature': encode_hex(NO_SIGNATURE),
|
||||
},
|
||||
'output': False,
|
||||
}
|
||||
|
||||
|
||||
def case05_aggregate_verify():
|
||||
pairs = []
|
||||
pubkeys = []
|
||||
pubkeys_serial = []
|
||||
messages = []
|
||||
messages_serial = []
|
||||
sigs = []
|
||||
for privkey, message in zip(PRIVKEYS, MESSAGES):
|
||||
sig = bls.G2ProofOfPossession.Sign(privkey, message)
|
||||
pubkey = bls.G2ProofOfPossession.SkToPk(privkey)
|
||||
pairs.append({
|
||||
'pubkey': encode_hex(pubkey),
|
||||
'message': encode_hex(message),
|
||||
})
|
||||
sig = bls.Sign(privkey, message)
|
||||
pubkey = bls.SkToPk(privkey)
|
||||
pubkeys.append(pubkey)
|
||||
pubkeys_serial.append(encode_hex(pubkey))
|
||||
messages.append(message)
|
||||
messages_serial.append(encode_hex(message))
|
||||
sigs.append(sig)
|
||||
|
||||
aggregate_signature = bls.G2ProofOfPossession.Aggregate(sigs)
|
||||
aggregate_signature = bls.Aggregate(sigs)
|
||||
assert bls.AggregateVerify(pubkeys, messages, aggregate_signature)
|
||||
yield f'aggregate_verify_valid', {
|
||||
'input': {
|
||||
'pairs': pairs,
|
||||
'pubkeys': pubkeys_serial,
|
||||
'messages': messages_serial,
|
||||
'signature': encode_hex(aggregate_signature),
|
||||
},
|
||||
'output': True,
|
||||
}
|
||||
|
||||
tampered_signature = aggregate_signature[:4] + b'\xff\xff\xff\xff'
|
||||
assert not bls.AggregateVerify(pubkey, messages, tampered_signature)
|
||||
yield f'aggregate_verify_tampered_signature', {
|
||||
'input': {
|
||||
'pairs': pairs,
|
||||
'pubkeys': pubkeys_serial,
|
||||
'messages': messages_serial,
|
||||
'signature': encode_hex(tampered_signature),
|
||||
},
|
||||
'output': False,
|
||||
}
|
||||
|
||||
# Invalid pubkeys and signature -- len(pubkeys) == 0 and signature == Z1_SIGNATURE
|
||||
assert not bls.AggregateVerify([], [], Z2_SIGNATURE)
|
||||
yield f'aggregate_verify_na_pubkeys_and_infinity_signature', {
|
||||
'input': {
|
||||
'pubkeys': [],
|
||||
'messages': [],
|
||||
'signature': encode_hex(Z2_SIGNATURE),
|
||||
},
|
||||
'output': False,
|
||||
}
|
||||
|
||||
# Invalid pubkeys and signature -- len(pubkeys) == 0 and signature == 0x00...
|
||||
assert not bls.AggregateVerify([], [], NO_SIGNATURE)
|
||||
yield f'aggregate_verify_na_pubkeys_and_na_signature', {
|
||||
'input': {
|
||||
'pubkeys': [],
|
||||
'messages': [],
|
||||
'signature': encode_hex(NO_SIGNATURE),
|
||||
},
|
||||
'output': False,
|
||||
}
|
||||
|
||||
|
||||
def create_provider(handler_name: str,
|
||||
test_case_fn: Callable[[], Iterable[Tuple[str, Dict[str, Any]]]]) -> gen_typing.TestProvider:
|
||||
|
|
|
|||
Loading…
Reference in New Issue