fix build after rebase;

Author: greenhat

ergotree-interpreter/Cargo.toml

@@ -27,6 +27,7 @@ num-traits = "0.2.14"
 proptest-derive = {version = "0.3.0", optional = true }
 base16 = "0.2.1"
 num-bigint = "0.4.0"
+rand = "0.8.3"
 
 [dependencies.proptest]
 # wasm support, via https://altsysrq.github.io/proptest-book/proptest/wasm.html

ergotree-interpreter/src/sigma_protocol/crypto_utils.rs

@@ -1,4 +1,4 @@
-use rand::RngCore;
+use elliptic_curve::rand_core::RngCore;
 
 /// Generate cryptographically secure random bytes
 pub fn secure_random_bytes(how_many: usize) -> Vec<u8> {

ergotree-ir/Cargo.toml

@@ -50,3 +50,4 @@ arbitrary = ["proptest", "proptest-derive"]
 
 [dev-dependencies]
 sigma-test-util = { version = "0.2.0", path = "../sigma-test-util" }
+rand = "0.8.3"

ergotree-ir/src/sigma_protocol/dlog_group.rs

@@ -23,6 +23,7 @@ use crate::serialization::{
 };
 use elliptic_curve::group::ff::PrimeField;
 use elliptic_curve::group::prime::PrimeCurveAffine;
+use elliptic_curve::rand_core::RngCore;
 use k256::elliptic_curve::sec1::ToEncodedPoint;
 use k256::{ProjectivePoint, PublicKey, Scalar};
 use num_bigint::Sign;
@@ -113,9 +114,8 @@ pub fn exponentiate(base: &EcPoint, exponent: &Scalar) -> EcPoint {
 
 /// Creates a random scalar, a big-endian integer in the range [0, n), where n is group order
 /// Use cryptographically secure PRNG (like rand::thread_rng())
-pub fn random_scalar_in_group_range() -> Scalar {
-    use k256::elliptic_curve::rand_core::OsRng;
-    Scalar::generate_vartime(&mut OsRng)
+pub fn random_scalar_in_group_range(rng: impl RngCore) -> Scalar {
+    Scalar::generate_vartime(rng)
 }
 
 /// Attempts to create BigInt256 from Scalar

ergotree-ir/src/sigma_protocol/sigma_boolean.rs

@@ -361,6 +361,7 @@ mod arbitrary {
     }
 }
 
+#[allow(clippy::panic)]
 #[cfg(test)]
 mod tests {
     use super::*;

ergotree-ir/src/sigma_protocol/sigma_boolean/cand.rs

@@ -80,6 +80,7 @@ mod arbitrary {
     }
 }
 
+#[allow(clippy::panic)]
 #[allow(clippy::unwrap_used)]
 #[cfg(test)]
 mod tests {

ergotree-ir/src/sigma_protocol/sigma_boolean/cor.rs

@@ -82,6 +82,7 @@ mod arbitrary {
 }
 
 #[allow(clippy::unwrap_used)]
+#[allow(clippy::panic)]
 #[cfg(test)]
 mod tests {
     use super::*;