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feat: add recursive proof verifier to go runtime #356

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8 changes: 8 additions & 0 deletions crates/go-runtime/zkvm_runtime/runtime.go
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ func SyscallHintRead(ptr []byte, len int)
func SyscallCommit(index int, word uint32)
func SyscallExit(code int)
func SyscallKeccakSponge(input unsafe.Pointer, result unsafe.Pointer)
func SyscallVerifyZkmProof(vkDigest *[8]uint32, pvDigest *[32]byte)

var PublicValuesHasher hash.Hash = sha256.New()

Expand Down Expand Up @@ -127,6 +128,13 @@ func Keccak256(data []byte) [32]byte {
return result
}

// VerifyZkmProof verifies a ZK proof using the VERIFY_ZKM_PROOF syscall
// vkDigest: 8 uint32 values representing the verification key digest
// pvDigest: 32-byte SHA256 hash of the public values
func VerifyZkmProof(vkDigest [8]uint32, pvDigest [32]byte) {
SyscallVerifyZkmProof(&vkDigest, &pvDigest)
}

func init() {
// Explicit reference, prevent optimization
_ = reflect.ValueOf(RuntimeExit)
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7 changes: 7 additions & 0 deletions crates/go-runtime/zkvm_runtime/syscall_mipsle.s
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Expand Up @@ -42,3 +42,10 @@ TEXT ·SyscallKeccakSponge(SB), $0-8
MOVW result+4(FP), R5 // a1 = result pointer
SYSCALL
RET

TEXT ·SyscallVerifyZkmProof(SB), $0-8
MOVW $0x1B, R2 // v0 = VERIFY_ZKM_PROOF syscall (0x00_00_00_1B)
MOVW vkDigest+0(FP), R4 // a0 = vkDigest pointer (pointer to [8]uint32)
MOVW pvDigest+4(FP), R5 // a1 = pvDigest pointer (pointer to [32]byte)
SYSCALL
RET