Update stellar-strkey to 0.0.18

Cargo.toml

@@ -22,7 +22,7 @@ exclude = ["soroban-test-wasms/wasm-workspace"]
 # code guarded by `unstable-*` features to make it enabled
 # unconditionally.
 version = "27.0.0"
-rust-version = "1.84.0"
+rust-version = "1.87.0"
 
 [workspace.dependencies]
 soroban-env-common = { version = "=27.0.0", path = "soroban-env-common", default-features = false }
@@ -53,6 +53,12 @@ rev = "0ed3f3dee30dc41ebe21972399e0a73a41944aa0"
 # soroban-wasmi = { path = "../wasmi/crates/wasmi/" }
 # soroban-wasmi_core = { path = "../wasmi/crates/core/" }
 
+# Temporary: stellar-strkey 0.0.18 is not yet published to crates.io. Point at
+# the release/v0.0.18 branch so this PR can be validated against the actual
+# 0.0.18 code ahead of the release. Remove once 0.0.18 is published.
+[patch.crates-io]
+stellar-strkey = { git = "https://github.com/stellar/rs-stellar-strkey", rev = "73bf43778a4acad5e7b3589f54a5ec3607c4b7b1" }
+
 [profile.release]
 lto = true
 debug = true

cackle.toml

@@ -109,6 +109,9 @@ allow_apis = [
 
 [pkg.rand]
 allow_unsafe = true
+allow_apis = [
+    "rand",
+]
 
 [pkg.backtrace]
 allow_apis = [
@@ -146,6 +149,18 @@ allow_unsafe = true
 [pkg.subtle]
 allow_unsafe = true
 
+[pkg.byteorder]
+allow_unsafe = true
+
+[pkg.hash32]
+allow_unsafe = true
+
+[pkg.stable_deref_trait]
+allow_unsafe = true
+
+[pkg.stellar-strkey]
+allow_unsafe = true
+
 [pkg.zeroize]
 allow_unsafe = true
 
@@ -245,6 +260,14 @@ build.allow_apis = [
     "env",
 ]
 
+[pkg.heapless]
+allow_unsafe = true
+build.allow_apis = [
+    "env",
+    "fs",
+    "process",
+]
+
 [pkg.tracking-allocator]
 allow_unsafe = true
 from.test.allow_apis = [

deny.toml

@@ -246,6 +246,10 @@ skip = [
     { name = "hashbrown", version = "=0.14.1" },
     { name = "syn", version = "=1.0.109" },
     { name = "crate-git-revision", version = "=0.0.6" },
+    # Transitional duplicate: we depend on stellar-strkey 0.0.18 directly while
+    # the published stellar-xdr 27.0.0 still pulls in 0.0.13. This goes away once
+    # the stellar-xdr v28 (protocol-28) release also ships on strkey 0.0.18.
+    { name = "stellar-strkey", version = "=0.0.13" },
 ]
 # Similarly to `skip` allows you to skip certain crates during duplicate
 # detection. Unlike skip, it also includes the entire tree of transitive

soroban-env-host/Cargo.toml

@@ -8,7 +8,7 @@ license = "Apache-2.0"
 version.workspace = true
 readme = "../README.md"
 edition = "2021"
-rust-version = "1.84.0"
+rust-version = "1.87.0"
 build = "build.rs"
 
 exclude = ["observations/"]
@@ -18,7 +18,7 @@ soroban-builtin-sdk-macros = { workspace = true }
 soroban-env-common = { workspace = true, features = ["std", "wasmi", "shallow-val-hash"] }
 wasmi = { workspace = true }
 wasmparser = { workspace = true }
-stellar-strkey = "0.0.13"
+stellar-strkey = "0.0.18"
 static_assertions = "1.1.0"
 sha2 = "0.10.8"
 hex-literal = "0.4.1"

soroban-env-host/src/crypto/poseidon/poseidon2.rs

@@ -89,7 +89,7 @@ impl<F: MeteredScalar> Poseidon2<F> {
     /// (https://eprint.iacr.org/2023/323)
     fn matmul_m4(&self, host: &Host, state: &mut [F]) -> Result<(), HostError> {
         let t = self.params.t;
-        if t % 4 != 0 {
+        if !t.is_multiple_of(4) {
             return Err(host.error(
                 INVALID_INPUT,
                 "Poseidon2: matmul_m4 state size must be divisible by 4",

soroban-env-host/src/crypto/poseidon/poseidon2_params.rs

@@ -46,7 +46,7 @@ impl<F: MeteredScalar> Poseidon2Params<F> {
                 ],
             ));
         }
-        if rounds_f % 2 != 0 {
+        if !rounds_f.is_multiple_of(2) {
             return Err(host.error(
                 INVALID_INPUT,
                 "Poseidon2: `rounds_f` must be even",

soroban-env-host/src/crypto/poseidon/poseidon_params.rs

@@ -46,7 +46,7 @@ impl<S: MeteredScalar> PoseidonParams<S> {
                 ],
             ));
         }
-        if rounds_f % 2 != 0 {
+        if !rounds_f.is_multiple_of(2) {
             return Err(host.error(
                 INVALID_INPUT,
                 "Poseidon: `rounds_f` must be even",

soroban-env-host/src/host/conversion.rs

@@ -686,7 +686,7 @@ impl Host {
                 ))
             }
         };
-        Ok(strkey.to_string())
+        Ok(strkey.to_string().as_str().to_string())
     }
 
     pub(crate) fn muxed_sc_address_to_strkey(
@@ -708,7 +708,7 @@ impl Host {
                         ed25519: muxed_account.ed25519.0.metered_clone(self)?,
                     },
                 );
-                Ok(strkey.to_string())
+                Ok(strkey.to_string().as_str().to_string())
             }
             _ => Err(self.err(
                 ScErrorType::Object,

soroban-fuzz-targets/Cargo.toml

@@ -7,7 +7,7 @@ authors = ["Stellar Development Foundation <info@stellar.org>"]
 license = "Apache-2.0"
 version.workspace = true
 edition = "2021"
-rust-version = "1.84.0"
+rust-version = "1.87.0"
 publish = false
 
 [dependencies]