Update libprio-rs dependency to version 0.8.0.

This version of libprio-rs implements draft-irtf-cfrg-vdaf-01, which is
the version we are targeting for interop tests.

This change is large but mostly-mechanical. A large number of line
changes are due to the new `L` const generic parameter to the VDAF
Aggregator trait.  This parameter is effectively the underlying PRG's
seed size.  Unfortunately, Rust currently doesn't allow const generic
parameters to be inferred; there is an open issue to resolve this, but
it doesn't appear to have received much attention thus far[1].

[1] rust-lang/rust#80528

Author: branlwyd

Cargo.lock

@@ -43,14 +43,14 @@ CREATE TABLE task_hpke_keys(
     CONSTRAINT fk_task_id FOREIGN KEY(task_id) REFERENCES tasks(id)
 );
 
--- The VDAF verification parameters used by a given task.
+-- The VDAF verification keys used by a given task.
 -- TODO(#229): support multiple verification parameters per task
-CREATE TABLE task_vdaf_verify_params(
+CREATE TABLE task_vdaf_verify_keys(
     id BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,  -- artificial ID, internal-only
-    task_id BIGINT NOT NULL,           -- task ID the verification parameter is associated with
-    vdaf_verify_param BYTEA NOT NULL,  -- the VDAF verification parameter (opaque VDAF message, encrypted)
+    task_id BIGINT NOT NULL,         -- task ID the verification key is associated with
+    vdaf_verify_key BYTEA NOT NULL,  -- the VDAF verification key (encrypted)
 
-    CONSTRAINT vdaf_verify_param_unique_task_id UNIQUE(task_id),
+    CONSTRAINT vdaf_verify_key_unique_task_id UNIQUE(task_id),
     CONSTRAINT fk_task_id FOREIGN KEY(task_id) REFERENCES tasks(id)
 );
 

db/schema.sql

@@ -12,7 +12,7 @@ chrono = "0.4"
 hex = "0.4.3"
 hpke-dispatch = "0.3.0"
 num_enum = "0.5.6"
-prio = "0.7.1"
+prio = "0.8.0"
 rand = "0.8"
 ring = "0.16.20"
 serde = { version = "1.0.137", features = ["derive"] }

janus/Cargo.toml

@@ -34,7 +34,7 @@ opentelemetry-otlp = { version = "0.10.0", optional = true, features = ["metrics
 opentelemetry-prometheus = { version = "0.10.0", optional = true }
 opentelemetry-semantic-conventions = { version = "0.9.0", optional = true }
 postgres-types = { version = "0.2.3", features = ["derive", "array-impls"] }
-prio = "0.7.1"
+prio = "0.8.0"
 prometheus = { version = "0.13.1", optional = true }
 rand = "0.8"
 reqwest = { version = "0.11.4", default-features = false, features = ["rustls-tls", "json"] }