diff --git a/__tests__/helpers/index.ts b/__tests__/helpers/index.ts
index 8eb09e75c4c3898d9ea41820ed6b822e6221b348..9c605c38e63c3ca04e878e682cc0e5d87e0db7e0 100644
--- a/__tests__/helpers/index.ts
+++ b/__tests__/helpers/index.ts
@@ -6,7 +6,7 @@ import { expect, test } from "@jest/globals";
 import { PlainNormalizer, HTMLNormalizer } from "../../src";
 import { listDirectories, readFile } from "./fileReader";
 import { diffStringsUnified } from "jest-diff";
-import { SealService } from "@vereign/light-utils";
+import { SealService } from "@vereign/lib-seal";
 
 const SENT_EML_NAME = "sent.eml";
 const RECEIVED_EML_NAME = "received.eml";
diff --git a/package.json b/package.json
index c3f824a2cbd989958e541790d20be43c017d1e9f..21d288efca9fa4438f7108b18ad324f3ad494545 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "@typescript-eslint/parser": "^3.10.1",
     "@vereign/lib-mime": "^1.1.2",
     "@vereign/lib-png": "^1.0.0",
-    "@vereign/light-utils": "git+ssh://git@code.vereign.com:seal/building-blocks/signing-verification-utilities.git",
+    "@vereign/lib-seal": "^1.0.0",
     "babel-eslint": "^10.1.0",
     "babel-jest": "^26.3.0",
     "eslint": "^7.7.0",
diff --git a/yarn.lock b/yarn.lock
index ed28d2a73a195b0526cfec61710939506c124e67..9d94758a0323b3c9af7267cbf51a9cf0b4540800 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1070,59 +1070,6 @@
     "@types/yargs" "^15.0.0"
     chalk "^4.0.0"
 
-"@protobufjs/aspromise@^1.1.1", "@protobufjs/aspromise@^1.1.2":
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/@protobufjs/aspromise/-/aspromise-1.1.2.tgz#9b8b0cc663d669a7d8f6f5d0893a14d348f30fbf"
-  integrity sha1-m4sMxmPWaafY9vXQiToU00jzD78=
-
-"@protobufjs/base64@^1.1.2":
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/@protobufjs/base64/-/base64-1.1.2.tgz#4c85730e59b9a1f1f349047dbf24296034bb2735"
-  integrity sha512-AZkcAA5vnN/v4PDqKyMR5lx7hZttPDgClv83E//FMNhR2TMcLUhfRUBHCmSl0oi9zMgDDqRUJkSxO3wm85+XLg==
-
-"@protobufjs/codegen@^2.0.4":
-  version "2.0.4"
-  resolved "https://registry.yarnpkg.com/@protobufjs/codegen/-/codegen-2.0.4.tgz#7ef37f0d010fb028ad1ad59722e506d9262815cb"
-  integrity sha512-YyFaikqM5sH0ziFZCN3xDC7zeGaB/d0IUb9CATugHWbd1FRFwWwt4ld4OYMPWu5a3Xe01mGAULCdqhMlPl29Jg==
-
-"@protobufjs/eventemitter@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@protobufjs/eventemitter/-/eventemitter-1.1.0.tgz#355cbc98bafad5978f9ed095f397621f1d066b70"
-  integrity sha1-NVy8mLr61ZePntCV85diHx0Ga3A=
-
-"@protobufjs/fetch@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@protobufjs/fetch/-/fetch-1.1.0.tgz#ba99fb598614af65700c1619ff06d454b0d84c45"
-  integrity sha1-upn7WYYUr2VwDBYZ/wbUVLDYTEU=
-  dependencies:
-    "@protobufjs/aspromise" "^1.1.1"
-    "@protobufjs/inquire" "^1.1.0"
-
-"@protobufjs/float@^1.0.2":
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/@protobufjs/float/-/float-1.0.2.tgz#5e9e1abdcb73fc0a7cb8b291df78c8cbd97b87d1"
-  integrity sha1-Xp4avctz/Ap8uLKR33jIy9l7h9E=
-
-"@protobufjs/inquire@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@protobufjs/inquire/-/inquire-1.1.0.tgz#ff200e3e7cf2429e2dcafc1140828e8cc638f089"
-  integrity sha1-/yAOPnzyQp4tyvwRQIKOjMY48Ik=
-
-"@protobufjs/path@^1.1.2":
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/@protobufjs/path/-/path-1.1.2.tgz#6cc2b20c5c9ad6ad0dccfd21ca7673d8d7fbf68d"
-  integrity sha1-bMKyDFya1q0NzP0hynZz2Nf79o0=
-
-"@protobufjs/pool@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@protobufjs/pool/-/pool-1.1.0.tgz#09fd15f2d6d3abfa9b65bc366506d6ad7846ff54"
-  integrity sha1-Cf0V8tbTq/qbZbw2ZQbWrXhG/1Q=
-
-"@protobufjs/utf8@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@protobufjs/utf8/-/utf8-1.1.0.tgz#a777360b5b39a1a2e5106f8e858f2fd2d060c570"
-  integrity sha1-p3c2C1s5oaLlEG+OhY8v0tBgxXA=
-
 "@sinonjs/commons@^1.7.0":
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.1.tgz#e7df00f98a203324f6dc7cc606cad9d4a8ab2217"
@@ -1211,21 +1158,11 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.6.tgz#f4c7ec43e81b319a9815115031709f26987891f0"
   integrity sha512-3c+yGKvVP5Y9TYBEibGNR+kLtijnj7mYrXRg+WpFb2X9xm04g/DXYkfg4hmzJQosc9snFNUPkbYIhu+KAm6jJw==
 
-"@types/long@^4.0.1":
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/@types/long/-/long-4.0.1.tgz#459c65fa1867dafe6a8f322c4c51695663cc55e9"
-  integrity sha512-5tXH6Bx/kNGd3MgffdmP4dy2Z+G4eaXw0SE81Tq3BNadtnMR5/ySMzX4SLEzHJzSmPNn4HIdpQsBvXMUykr58w==
-
 "@types/node@*":
   version "14.14.9"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.9.tgz#04afc9a25c6ff93da14deabd65dc44485b53c8d6"
   integrity sha512-JsoLXFppG62tWTklIoO4knA+oDTYsmqWxHRvd4lpmfQRNhX6osheUOWETP2jMoV/2bEHuMra8Pp3Dmo/stBFcw==
 
-"@types/node@^13.7.0":
-  version "13.13.45"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-13.13.45.tgz#e6676bcca092bae5751d015f074a234d5a82eb63"
-  integrity sha512-703YTEp8AwQeapI0PTXDOj+Bs/mtdV/k9VcTP7z/de+lx6XjFMKdB+JhKnK+6PZ5za7omgZ3V6qm/dNkMj/Zow==
-
 "@types/normalize-package-data@^2.4.0":
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/@types/normalize-package-data/-/normalize-package-data-2.4.0.tgz#e486d0d97396d79beedd0a6e33f4534ff6b4973e"
@@ -1328,20 +1265,6 @@
   resolved "https://registry.yarnpkg.com/@vereign/lib-png/-/lib-png-1.0.0.tgz#ce758b50953245498cf36e011e22180deee0e778"
   integrity sha512-BLSy4hP/GeTnEfTlGFH/0naM/7JrCrTCPTdkeo+6HtTJRHtBZZg9fhGZJYBFrmNL3y5fNnSjsDha7kG6UjkMSw==
 
-"@vereign/light-utils@git+ssh://git@code.vereign.com:seal/building-blocks/signing-verification-utilities.git":
-  version "1.0.1"
-  resolved "git+ssh://git@code.vereign.com:seal/building-blocks/signing-verification-utilities.git#7bfe671f23e61ce2e4fa19ede48c24380cb6d2b5"
-  dependencies:
-    axios "^0.20.0"
-    easyqrcodejs "^4.3.1"
-    eventemitter2 "^6.4.3"
-    google-protobuf "^3.13.0"
-    js-md5 "^0.7.3"
-    penpal "^5.3.0"
-    protobufjs "^6.10.1"
-    url-parse "^1.4.7"
-    zlibjs "^0.3.1"
-
 abab@^2.0.3, abab@^2.0.5:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/abab/-/abab-2.0.5.tgz#c0b678fb32d60fc1219c784d6a826fe385aeb79a"
@@ -1526,13 +1449,6 @@ aws4@^1.8.0:
   resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.11.0.tgz#d61f46d83b2519250e2784daf5b09479a8b41c59"
   integrity sha512-xh1Rl34h6Fi1DC2WWKfxUTVqRsNnr6LsKz2+hfwDxQJWmrx8+c7ylaqBMcHfl1U1r2dsifOvKX3LQuLNZ+XSvA==
 
-axios@^0.20.0:
-  version "0.20.0"
-  resolved "https://registry.yarnpkg.com/axios/-/axios-0.20.0.tgz#057ba30f04884694993a8cd07fa394cff11c50bd"
-  integrity sha512-ANA4rr2BDcmmAQLOKft2fufrtuvlqR+cXNNinUmvfeSNCOF98PZL+7M/v1zIdGo7OLjEA9J2gXJL+j4zGsl0bA==
-  dependencies:
-    follow-redirects "^1.10.0"
-
 babel-eslint@^10.1.0:
   version "10.1.0"
   resolved "https://registry.yarnpkg.com/babel-eslint/-/babel-eslint-10.1.0.tgz#6968e568a910b78fb3779cdd8b6ac2f479943232"
@@ -2088,11 +2004,6 @@ domexception@^2.0.1:
   dependencies:
     webidl-conversions "^5.0.0"
 
-easyqrcodejs@^4.3.1:
-  version "4.3.2"
-  resolved "https://registry.yarnpkg.com/easyqrcodejs/-/easyqrcodejs-4.3.2.tgz#06b6c88366e5626fad7c44655886276ceda77d34"
-  integrity sha512-5609dFayVxInBzbZEoMw6ELLtKCZidWoLOKmNDRYNxdMoRLRZaqJ0TNsklFkMyajvVbFAq1h/xgYYGJDLKXqvQ==
-
 ecc-jsbn@~0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz#3a83a904e54353287874c564b7549386849a98c9"
@@ -2292,11 +2203,6 @@ esutils@^2.0.2:
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.3.tgz#74d2eb4de0b8da1293711910d50775b9b710ef64"
   integrity sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g==
 
-eventemitter2@^6.4.3:
-  version "6.4.4"
-  resolved "https://registry.yarnpkg.com/eventemitter2/-/eventemitter2-6.4.4.tgz#aa96e8275c4dbeb017a5d0e03780c65612a1202b"
-  integrity sha512-HLU3NDY6wARrLCEwyGKRBvuWYyvW6mHYv72SJJAH3iJN3a6eVUvkjFkcxah1bcTgGVBBrFdIopBJPhCQFMLyXw==
-
 exec-sh@^0.3.2:
   version "0.3.4"
   resolved "https://registry.yarnpkg.com/exec-sh/-/exec-sh-0.3.4.tgz#3a018ceb526cc6f6df2bb504b2bfe8e3a4934ec5"
@@ -2486,11 +2392,6 @@ flatted@^2.0.0:
   resolved "https://registry.yarnpkg.com/flatted/-/flatted-2.0.2.tgz#4575b21e2bcee7434aa9be662f4b7b5f9c2b5138"
   integrity sha512-r5wGx7YeOwNWNlCA0wQ86zKyDLMQr+/RB8xy74M4hTphfmjlijTSSXGuH8rnvKZnfT9i+75zmd8jcKdMR4O6jA==
 
-follow-redirects@^1.10.0:
-  version "1.13.3"
-  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.3.tgz#e5598ad50174c1bc4e872301e82ac2cd97f90267"
-  integrity sha512-DUgl6+HDzB0iEptNQEXLx/KhTmDb8tZUHSeLqpnjpknR70H0nC2t9N73BK6fN4hOvJ84pKlIQVQ4k5FFlBedKA==
-
 for-in@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
@@ -2632,11 +2533,6 @@ globals@^12.1.0:
   dependencies:
     type-fest "^0.8.1"
 
-google-protobuf@^3.13.0:
-  version "3.15.5"
-  resolved "https://registry.yarnpkg.com/google-protobuf/-/google-protobuf-3.15.5.tgz#d011f334231e79b472e42d4e8ec7409cd402a747"
-  integrity sha512-6bLpAI4nMIQODlegR7OevgkCoyOj5frLVDArUpeuBWad7XWUNWMGP0v5lz1/aeUI6Yf3cG9XA6acZkPxom4SEw==
-
 graceful-fs@^4.2.4:
   version "4.2.4"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.4.tgz#2256bde14d3632958c465ebc96dc467ca07a29fb"
@@ -3454,11 +3350,6 @@ jest@^26.4.2:
     import-local "^3.0.2"
     jest-cli "^26.6.3"
 
-js-md5@^0.7.3:
-  version "0.7.3"
-  resolved "https://registry.yarnpkg.com/js-md5/-/js-md5-0.7.3.tgz#b4f2fbb0b327455f598d6727e38ec272cd09c3f2"
-  integrity sha512-ZC41vPSTLKGwIRjqDh8DfXoCrdQIyBgspJVPXHBGu4nZlAEvG3nf+jO9avM9RmLiGakg7vz974ms99nEV0tmTQ==
-
 js-tokens@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
@@ -3723,11 +3614,6 @@ log-update@^4.0.0:
     slice-ansi "^4.0.0"
     wrap-ansi "^6.2.0"
 
-long@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/long/-/long-4.0.0.tgz#9a7b71cfb7d361a194ea555241c92f7468d5bf28"
-  integrity sha512-XsP+KhQif4bjX1kbuSiySJFNAehNxgLb6hPRGJ9QsUr8ajHkuXGdrHmFUTUUXhDwVX2R5bY4JNZEwbUiMhV+MA==
-
 make-dir@^3.0.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-3.1.0.tgz#415e967046b3a7f1d185277d84aa58203726a13f"
@@ -4119,11 +4005,6 @@ path-type@^4.0.0:
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-4.0.0.tgz#84ed01c0a7ba380afe09d90a8c180dcd9d03043b"
   integrity sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==
 
-penpal@^5.3.0:
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/penpal/-/penpal-5.3.0.tgz#1a6afc56d6f257189e3d99650f58651a913db3ce"
-  integrity sha512-ezGckenx66j3RShl4nZiswjgDxyoDaJJ9tLBp46UvVxlA9MlIPF6hWfuppw1AzaDKgUULU1i44QFOuI4SXY/mg==
-
 performance-now@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
@@ -4198,25 +4079,6 @@ prompts@^2.0.1:
     kleur "^3.0.3"
     sisteransi "^1.0.5"
 
-protobufjs@^6.10.1:
-  version "6.10.2"
-  resolved "https://registry.yarnpkg.com/protobufjs/-/protobufjs-6.10.2.tgz#b9cb6bd8ec8f87514592ba3fdfd28e93f33a469b"
-  integrity sha512-27yj+04uF6ya9l+qfpH187aqEzfCF4+Uit0I9ZBQVqK09hk/SQzKa2MUqUpXaVa7LOFRg1TSSr3lVxGOk6c0SQ==
-  dependencies:
-    "@protobufjs/aspromise" "^1.1.2"
-    "@protobufjs/base64" "^1.1.2"
-    "@protobufjs/codegen" "^2.0.4"
-    "@protobufjs/eventemitter" "^1.1.0"
-    "@protobufjs/fetch" "^1.1.0"
-    "@protobufjs/float" "^1.0.2"
-    "@protobufjs/inquire" "^1.1.0"
-    "@protobufjs/path" "^1.1.2"
-    "@protobufjs/pool" "^1.1.0"
-    "@protobufjs/utf8" "^1.1.0"
-    "@types/long" "^4.0.1"
-    "@types/node" "^13.7.0"
-    long "^4.0.0"
-
 psl@^1.1.28, psl@^1.1.33:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/psl/-/psl-1.8.0.tgz#9326f8bcfb013adcc005fdff056acce020e51c24"
@@ -5348,8 +5210,3 @@ yargs@^15.4.1:
     which-module "^2.0.0"
     y18n "^4.0.0"
     yargs-parser "^18.1.2"
-
-zlibjs@^0.3.1:
-  version "0.3.1"
-  resolved "https://registry.yarnpkg.com/zlibjs/-/zlibjs-0.3.1.tgz#50197edb28a1c42ca659cc8b4e6a9ddd6d444554"
-  integrity sha1-UBl+2yihxCymWcyLTmqd3W1ERVQ=