keymgr, key-forge: Use our ssh-* forks

Upstream `ssh-key` is missing some important features we need for
arti-relay:

  * a bug fix without which we can't convert deserialized RSA keys to
    their rsa counterparts: RustCrypto/SSH#318
  * @WesleyAC 's patch RustCrypto/SSH#412 for
    allowing insecure (1024 bits long) RSA keys (needed because the
    relay KS_relayid_rsa identity keys are 1024 bits long)

We plan to switch back to mainline `ssh-key` when `ssh-key 0.7.0` comes
out.

See the discussion in #2398 for more details.

Author: gabi-250

Cargo.lock

@@ -32,7 +32,7 @@ paste = "1.0.3"
 rand = "0.9.1"
 rsa = "0.9.0"
 signature = "2"
-ssh-key = { version = "0.6.1", features = ["std", "rsa"] }
+ssh-key = { version = "0.6.7", package = "ssh-key-fork-arti", features = ["std", "rsa"] }
 thiserror = "2"
 tor-bytes = { path = "../tor-bytes", version = "0.40.0", default-features = false }
 tor-cert = { path = "../tor-cert", version = "0.40.0", features = ["encode", "experimental-api"] }

crates/tor-key-forge/Cargo.toml

@@ -69,7 +69,7 @@ rand = "0.9.1"
 safelog = { path = "../safelog", version = "0.8.0" }
 serde = { version = "1.0.103", features = ["derive"] }
 signature = "2"
-ssh-key = { version = "0.6.1", features = ["std"] }
+ssh-key = { version = "0.6.7", package = "ssh-key-fork-arti", features = ["std"] }
 thiserror = "2"
 tor-basic-utils = { path = "../tor-basic-utils", version = "0.40.0" }
 tor-bytes = { path = "../tor-bytes", version = "0.40.0", default-features = false }

crates/tor-keymgr/Cargo.toml

@@ -14,7 +14,7 @@ base32 = "0.5"
 clap = { version = "4.3.24", features = ["derive"] }
 rand = "0.9.1"
 rand_core = { version = "0.9.3", features = ["os_rng"] }
-ssh-key = { version = "0.6.1", features = ["dsa", "alloc", "rand_core", "std"] }
+ssh-key = { version = "0.6.7", package = "ssh-key-fork-arti", features = ["dsa", "alloc", "rand_core", "std"] }
 tor-basic-utils = { path = "../../crates/tor-basic-utils", version = "0.40" }
 tor-keymgr = { path = "../../crates/tor-keymgr", version = "0.40", features = ["keymgr"] }
 tor-llcrypto = { path = "../../crates/tor-llcrypto", version = "0.40", features = ["relay", "rng-compat", "cvt-x25519"] }