Add Curve25519 support (#577)

Supported in PIV applet since firmware 5.7.X

Cargo.lock

@@ -187,9 +187,9 @@ checksum = "0dabb6555f92fb9ee4140454eb5dcd14c7960e1225c6d1a6cc361f032947713e"
 
 [[package]]
 name = "cpufeatures"
-version = "0.2.11"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce420fe07aecd3e67c5f910618fe65e94158f6dcc0adf44e00d69ce2bdfe0fd0"
+checksum = "59ed5838eebb26a2bb2e58f6d5b5316989ae9d08bab10e0e6d103e656d1b0280"
 dependencies = [
  "libc",
 ]
@@ -229,6 +229,33 @@ dependencies = [
  "rand_core",
 ]
 
+[[package]]
+name = "curve25519-dalek"
+version = "5.0.0-pre.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f9200d1d13637f15a6acb71e758f64624048d85b31a5fdbfd8eca1e2687d0b7"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "curve25519-dalek-derive",
+ "digest",
+ "fiat-crypto",
+ "rustc_version",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "curve25519-dalek-derive"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f46882e17999c6cc590af592290432be3bce0428cb0d5f8b6715e4dc7b383eb3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "der"
 version = "0.8.0-rc.9"
@@ -289,6 +316,31 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "ed25519"
+version = "3.0.0-rc.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ef49c0b20c0ad088893ad2a790a29c06a012b3f05bcfc66661fd22a94b32129"
+dependencies = [
+ "pkcs8",
+ "signature",
+]
+
+[[package]]
+name = "ed25519-dalek"
+version = "3.0.0-pre.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad207ed88a133091f83224265eac21109930db09bedcad05d5252f2af2de20a1"
+dependencies = [
+ "curve25519-dalek",
+ "ed25519",
+ "serde",
+ "sha2",
+ "signature",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "elliptic-curve"
 version = "0.14.0-rc.14"
@@ -716,6 +768,15 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "rustc_version"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "sec1"
 version = "0.8.0-rc.10"
@@ -738,6 +799,12 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "semver"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
+
 [[package]]
 name = "serde"
 version = "1.0.193"
@@ -1084,6 +1151,18 @@ dependencies = [
  "bitflags 2.5.0",
 ]
 
+[[package]]
+name = "x25519-dalek"
+version = "3.0.0-pre.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a45998121837fd8c92655d2334aa8f3e5ef0645cdfda5b321b13760c548fd55"
+dependencies = [
+ "curve25519-dalek",
+ "rand_core",
+ "serde",
+ "zeroize",
+]
+
 [[package]]
 name = "x509-cert"
 version = "0.3.0-rc.2"
@@ -1106,9 +1185,11 @@ dependencies = [
  "base16ct 0.2.0",
  "bitflags 2.5.0",
  "cipher",
+ "curve25519-dalek",
  "der",
  "des",
  "ecdsa",
+ "ed25519-dalek",
  "elliptic-curve",
  "env_logger",
  "log",
@@ -1127,6 +1208,7 @@ dependencies = [
  "signature",
  "subtle",
  "uuid",
+ "x25519-dalek",
  "x509-cert",
  "zeroize",
 ]