diff --git a/services/identity/Cargo.lock b/services/identity/Cargo.lock
index fd8c36d37..2daac1e40 100644
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 [[package]]
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 [[package]]
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 checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
 
 [[package]]
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 dependencies = [
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 [[package]]
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 [[package]]
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 dependencies = [
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  "prost",
  "prost-types",
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  "tempfile",
  "which",
 ]
 
 [[package]]
 name = "prost-derive"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f9cc1a3263e07e0bf68e96268f37665207b49560d98739662cdfaae215c720fe"
 dependencies = [
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 [[package]]
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 dependencies = [
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 ]
 
 [[package]]
 name = "quote"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "632d02bff7f874a36f33ea8bb416cd484b90cc66c1194b1a1110d067a7013f58"
 dependencies = [
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 [[package]]
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 dependencies = [
  "libc",
  "rand_chacha",
- "rand_core",
+ "rand_core 0.6.3",
 ]
 
 [[package]]
 name = "rand_chacha"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.6.3",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
+dependencies = [
+ "getrandom 0.1.16",
 ]
 
 [[package]]
 name = "rand_core"
 version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.6",
 ]
 
 [[package]]
 name = "redox_syscall"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
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 dependencies = [
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 [[package]]
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 [[package]]
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 checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
 dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "sha2"
+version = "0.9.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d58a1e1bf39749807d89cf2d98ac2dfa0ff1cb3faa38fbb64dd88ac8013d800"
+dependencies = [
+ "block-buffer 0.9.0",
+ "cfg-if",
+ "cpufeatures",
+ "digest 0.9.0",
+ "opaque-debug",
+]
+
 [[package]]
 name = "slab"
 version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9def91fd1e018fe007022791f865d0ccc9b3a0d5001e01aabb8b40e46000afb5"
 
 [[package]]
 name = "socket2"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "66d72b759436ae32898a2af0a14218dbf55efde3feeb170eb623637db85ee1e0"
 dependencies = [
  "libc",
  "winapi",
 ]
 
+[[package]]
+name = "subtle"
+version = "2.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
+
 [[package]]
 name = "syn"
 version = "1.0.90"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "704df27628939572cd88d33f171cd6f896f4eaca85252c6e0a72d8d8287ee86f"
 dependencies = [
  "proc-macro2",
  "quote",
  "unicode-xid",
 ]
 
+[[package]]
+name = "synstructure"
+version = "0.12.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "unicode-xid",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5cdb1ef4eaeeaddc8fbd371e5017057064af0911902ef36b39801f67cc6d79e4"
 dependencies = [
  "cfg-if",
  "fastrand",
  "libc",
  "redox_syscall",
  "remove_dir_all",
  "winapi",
 ]
 
 [[package]]
 name = "tokio"
 version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2af73ac49756f3f7c01172e34a23e5d0216f6c32333757c2c61feb2bbff5a5ee"
 dependencies = [
  "bytes",
  "libc",
  "memchr",
  "mio",
  "num_cpus",
  "pin-project-lite",
  "socket2",
  "tokio-macros",
  "winapi",
 ]
 
 [[package]]
 name = "tokio-io-timeout"
 version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "30b74022ada614a1b4834de765f9bb43877f910cc8ce4be40e89042c9223a8bf"
 dependencies = [
  "pin-project-lite",
  "tokio",
 ]
 
 [[package]]
 name = "tokio-macros"
 version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b557f72f448c511a979e2564e55d74e6c4432fc96ff4f6241bc6bded342643b7"
 dependencies = [
  "proc-macro2",
  "quote",
  "syn",
 ]
 
 [[package]]
 name = "tokio-stream"
 version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "50145484efff8818b5ccd256697f36863f587da82cf8b409c53adf1e840798e3"
 dependencies = [
  "futures-core",
  "pin-project-lite",
  "tokio",
 ]
 
 [[package]]
 name = "tokio-util"
 version = "0.6.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e99e1983e5d376cd8eb4b66604d2e99e79f5bd988c3055891dcd8c9e2604cc0"
 dependencies = [
  "bytes",
  "futures-core",
  "futures-sink",
  "log",
  "pin-project-lite",
  "tokio",
 ]
 
 [[package]]
 name = "tokio-util"
 version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0edfdeb067411dba2044da6d1cb2df793dd35add7888d73c16e3381ded401764"
 dependencies = [
  "bytes",
  "futures-core",
  "futures-sink",
  "pin-project-lite",
  "tokio",
 ]
 
 [[package]]
 name = "tonic"
 version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ff08f4649d10a70ffa3522ca559031285d8e421d727ac85c60825761818f5d0a"
 dependencies = [
  "async-stream",
  "async-trait",
  "base64",
  "bytes",
  "futures-core",
  "futures-util",
  "h2",
  "http",
  "http-body",
  "hyper",
  "hyper-timeout",
  "percent-encoding",
  "pin-project",
  "prost",
  "prost-derive",
  "tokio",
  "tokio-stream",
  "tokio-util 0.6.9",
  "tower",
  "tower-layer",
  "tower-service",
  "tracing",
  "tracing-futures",
 ]
 
 [[package]]
 name = "tonic-build"
 version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9403f1bafde247186684b230dc6f38b5cd514584e8bec1dd32514be4745fa757"
 dependencies = [
  "proc-macro2",
  "prost-build",
  "quote",
  "syn",
 ]
 
 [[package]]
 name = "tower"
 version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a89fd63ad6adf737582df5db40d286574513c69a11dac5214dc3b5603d6713e"
 dependencies = [
  "futures-core",
  "futures-util",
  "indexmap",
  "pin-project",
  "pin-project-lite",
  "rand",
  "slab",
  "tokio",
  "tokio-util 0.7.1",
  "tower-layer",
  "tower-service",
  "tracing",
 ]
 
 [[package]]
 name = "tower-layer"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "343bc9466d3fe6b0f960ef45960509f84480bf4fd96f92901afe7ff3df9d3a62"
 
 [[package]]
 name = "tower-service"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "360dfd1d6d30e05fda32ace2c8c70e9c0a9da713275777f5a4dbb8a1893930c6"
 
 [[package]]
 name = "tracing"
 version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4a1bdf54a7c28a2bbf701e1d2233f6c77f473486b94bee4f9678da5a148dca7f"
 dependencies = [
  "cfg-if",
  "log",
  "pin-project-lite",
  "tracing-attributes",
  "tracing-core",
 ]
 
 [[package]]
 name = "tracing-attributes"
 version = "0.1.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2e65ce065b4b5c53e73bb28912318cb8c9e9ad3921f1d669eb0e68b4c8143a2b"
 dependencies = [
  "proc-macro2",
  "quote",
  "syn",
 ]
 
 [[package]]
 name = "tracing-core"
 version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "aa31669fa42c09c34d94d8165dd2012e8ff3c66aca50f3bb226b68f216f2706c"
 dependencies = [
  "lazy_static",
 ]
 
 [[package]]
 name = "tracing-futures"
 version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "97d095ae15e245a057c8e8451bab9b3ee1e1f68e9ba2b4fbc18d0ac5237835f2"
 dependencies = [
  "pin-project",
  "tracing",
 ]
 
 [[package]]
 name = "try-lock"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
 
+[[package]]
+name = "typenum"
+version = "1.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
+
 [[package]]
 name = "unicode-segmentation"
 version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7e8820f5d777f6224dc4be3632222971ac30164d4a258d595640799554ebfd99"
 
 [[package]]
 name = "unicode-xid"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
+[[package]]
+name = "version_check"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+
 [[package]]
 name = "want"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ce8a968cb1cd110d136ff8b819a556d6fb6d919363c61534f6860c7eb172ba0"
 dependencies = [
  "log",
  "try-lock",
 ]
 
+[[package]]
+name = "wasi"
+version = "0.9.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
+
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
 
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "which"
 version = "4.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5c4fb54e6113b6a8772ee41c3404fb0301ac79604489467e0a9ce1f3e97c24ae"
 dependencies = [
  "either",
  "lazy_static",
  "libc",
 ]
 
 [[package]]
 name = "winapi"
 version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
 dependencies = [
  "winapi-i686-pc-windows-gnu",
  "winapi-x86_64-pc-windows-gnu",
 ]
 
 [[package]]
 name = "winapi-i686-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "zeroize"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4756f7db3f7b5574938c3eb1c117038b8e07f95ee6718c0efad4ac21508f1efd"
+dependencies = [
+ "zeroize_derive",
+]
+
+[[package]]
+name = "zeroize_derive"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f8f187641dad4f680d25c4bfc4225b418165984179f26ca76ec4fb6441d3a17"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
diff --git a/services/identity/Cargo.toml b/services/identity/Cargo.toml
index a330de37d..65e9a28bb 100644
--- a/services/identity/Cargo.toml
+++ b/services/identity/Cargo.toml
@@ -1,15 +1,20 @@
 [package]
 name = "identity"
 version = "0.1.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
 tonic = "0.6"
 prost = "0.9"
 futures-core = "0.3"
 tokio = { version = "1.0", features = ["macros", "rt-multi-thread"] }
+opaque-ke = "1.2.0"
+argon2 = "0.3"
+curve25519-dalek = "3"
+sha2 = "0.9"
+digest = "0.9"
 
 [build-dependencies]
 tonic-build = "0.6"
diff --git a/services/identity/src/main.rs b/services/identity/src/main.rs
index 75b8bc1e4..b8c6f38b5 100644
--- a/services/identity/src/main.rs
+++ b/services/identity/src/main.rs
@@ -1,19 +1,19 @@
 use tonic::transport::Server;
 
-mod identity;
-use identity::{IdentityServiceServer, MyIdentityService};
+mod service;
+use service::{IdentityServiceServer, MyIdentityService};
 
 const IDENTITY_SERVICE_SOCKET_ADDR: &str = "[::]:50051";
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
   let addr = IDENTITY_SERVICE_SOCKET_ADDR.parse()?;
   let identity_service = MyIdentityService::default();
 
   Server::builder()
     .add_service(IdentityServiceServer::new(identity_service))
     .serve(addr)
     .await?;
 
   Ok(())
 }
diff --git a/services/identity/src/opaque.rs b/services/identity/src/opaque.rs
new file mode 100644
index 000000000..e3c656ebf
--- /dev/null
+++ b/services/identity/src/opaque.rs
@@ -0,0 +1,29 @@
+use argon2::Argon2;
+use digest::{generic_array::GenericArray, Digest};
+use opaque_ke::{
+  ciphersuite::CipherSuite, errors::InternalPakeError, hash::Hash, slow_hash::SlowHash,
+};
+
+pub struct Cipher;
+
+impl CipherSuite for Cipher {
+  type Group = curve25519_dalek::ristretto::RistrettoPoint;
+  type KeyExchange = opaque_ke::key_exchange::tripledh::TripleDH;
+  type Hash = sha2::Sha512;
+  type SlowHash = ArgonWrapper;
+}
+
+pub struct ArgonWrapper(Argon2<'static>);
+
+impl<D: Hash> SlowHash<D> for ArgonWrapper {
+  fn hash(
+    input: GenericArray<u8, <D as Digest>::OutputSize>,
+  ) -> Result<Vec<u8>, InternalPakeError> {
+    let params = Argon2::default();
+    let mut output = vec![0u8; <D as Digest>::output_size()];
+    params
+      .hash_password_into(&input, &[0; argon2::MIN_SALT_LEN], &mut output)
+      .map_err(|_| InternalPakeError::SlowHashError)?;
+    Ok(output)
+  }
+}
diff --git a/services/identity/src/identity.rs b/services/identity/src/service.rs
similarity index 100%
rename from services/identity/src/identity.rs
rename to services/identity/src/service.rs