(Ruby) How to Load a JWK Set Published at a Remote URL

Demonstrates how to load a JWK set published at a remote URL. In general, this example can fetch any JSON, or any text (non-binary) document from a remote URL. It uses the Chilkat HTTP API to do it.

Note: This example requires Chilkat v9.5.0.66 or later.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This example assumes the Chilkat HTTP API to have been previously unlocked.
# See Global Unlock Sample for sample code.

http = Chilkat::CkHttp.new()

# I put a sample JWK set at this URL: https://www.chilkatsoft.com/data/jwk-set.json
# You can test this example with it.
sbJwkSet = Chilkat::CkStringBuilder.new()
success = http.QuickGetSb("https://www.chilkatsoft.com/data/jwk-set.json",sbJwkSet)
if (success != true)
    print http.lastErrorText() + "\n";
    exit
end

# Load the JWK into a JSON object..
jwkSet = Chilkat::CkJsonObject.new()
jwkSet.LoadSb(sbJwkSet)
jwkSet.put_EmitCompact(false)
print "The full JWK Key Set:" + "\n";
print jwkSet.emit() + "\n";

# Iterate over each key...
numKeys = jwkSet.SizeOfArray("keys")
i = 0
while i < numKeys
    jwkSet.put_I(i)
    print "---- JWK " + i.to_s() + " ----" + "\n";
    # jwk is a CkJsonObject
    jwk = jwkSet.ObjectOf("keys[i]")
    jwk.put_EmitCompact(false)
    print jwk.emit() + "\n";

    i = i + 1
end

# Output:

# The full JWK Key Set:
# { 
#   "keys": [
#     { 
#       "kty": "EC",
#       "crv": "P-256",
#       "x": "MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4",
#       "y": "4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM",
#       "d": "870MB6gfuTJ4HtUnUvYMyJpr5eUZNP4Bk43bVdj3eAE",
#       "use": "enc",
#       "kid": "1"
#     },
#     { 
#       "kty": "RSA",
#       "n": "0vx7agoebGcQSuuPiLJXZptN9nndrQmbXEps2aiAFbWhM78LhWx4
# cbbfAAtVT86zwu1RK7aPFFxuhDR1L6tSoc_BJECPebWKRXjBZCiFV4n3oknjhMst
# n64tZ_2W-5JsGY4Hc5n9yBXArwl93lqt7_RN5w6Cf0h4QyQ5v-65YGjQR0_FDW2Q
# vzqY368QQMicAtaSqzs8KJZgnYb9c7d0zgdAZHzu6qMQvRL5hajrn1n91CbOpbIS
# D08qNLyrdkt-bFTWhAI4vMQFh6WeZu0fM4lFd2NcRwr3XPksINHaQ-G_xBniIqbw
# 0Ls1jF44-csFCur-kEgU8awapJzKnqDKgw",
#       "e": "AQAB",
#       "d": "X4cTteJY_gn4FYPsXB8rdXix5vwsg1FLN5E3EaG6RJoVH-HLLKD9
# M7dx5oo7GURknchnrRweUkC7hT5fJLM0WbFAKNLWY2vv7B6NqXSzUvxT0_YSfqij
# wp3RTzlBaCxWp4doFk5N2o8Gy_nHNKroADIkJ46pRUohsXywbReAdYaMwFs9tv8d
# _cPVY3i07a3t8MN6TNwm0dSawm9v47UiCl3Sk5ZiG7xojPLu4sbg1U2jx4IBTNBz
# nbJSzFHK66jT8bgkuqsk0GjskDJk19Z4qwjwbsnn4j2WBii3RL-Us2lGVkY8fkFz
# me1z0HbIkfz0Y6mqnOYtqc0X4jfcKoAC8Q",
#       "p": "83i-7IvMGXoMXCskv73TKr8637FiO7Z27zv8oj6pbWUQyLPQBQxtPV
# nwD20R-60eTDmD2ujnMt5PoqMrm8RfmNhVWDtjjMmCMjOpSXicFHj7XOuVIYQyqV
# WlWEh6dN36GVZYk93N8Bc9vY41xy8B9RzzOGVQzXvNEvn7O0nVbfs",
#       "q": "3dfOR9cuYq-0S-mkFLzgItgMEfFzB2q3hWehMuG0oCuqnb3vobLyum
# qjVZQO1dIrdwgTnCdpYzBcOfW5r370AFXjiWft_NGEiovonizhKpo9VVS78TzFgx
# kIdrecRezsZ-1kYd_s1qDbxtkDEgfAITAG9LUnADun4vIcb6yelxk",
#       "dp": "G4sPXkc6Ya9y8oJW9_ILj4xuppu0lzi_H7VTkS8xj5SdX3coE0oim
# YwxIi2emTAue0UOa5dpgFGyBJ4c8tQ2VF402XRugKDTP8akYhFo5tAA77Qe_Nmtu
# YZc3C3m3I24G2GvR5sSDxUyAN2zq8Lfn9EUms6rY3Ob8YeiKkTiBj0",
#       "dq": "s9lAH9fggBsoFR8Oac2R_E2gw282rT2kGOAhvIllETE1efrA6huUU
# vMfBcMpn8lqeW6vzznYY5SSQF7pMdC_agI3nG8Ibp1BUb0JUiraRNqUfLhcQb_d9
# GF4Dh7e74WbRsobRonujTYN1xCaP6TO61jvWrX-L18txXw494Q_cgk",
#       "qi": "GyM_p6JrXySiz1toFgKbWV-JdI3jQ4ypu9rbMWx3rQJBfmt0FoYzg
# UIZEVFEcOqwemRN81zoDAaa-Bk0KWNGDjJHZDdDmFhW3AN7lI-puxk_mHZGJ11rx
# yR8O55XLSe3SPmRfKwZI6yU24ZxvQKFYItdldUKGzO6Ia6zTKhAVRU",
#       "alg": "RS256",
#       "kid": "2011-04-29"
#     },
#     { 
#       "kty": "oct",
#       "alg": "A128KW",
#       "k": "GawgguFyGrWKav7AX4VKUg",
#       "kid": "AES KEK"
#     },
#     { 
#       "kty": "oct",
#       "k": "AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75
# aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow",
#       "kid": "HMAC key used in JWS spec Appendix A.1 example"
#     }
#   ]
# }
# 
# ---- JWK 0 ----
# { 
#   "kty": "EC",
#   "crv": "P-256",
#   "x": "MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4",
#   "y": "4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM",
#   "d": "870MB6gfuTJ4HtUnUvYMyJpr5eUZNP4Bk43bVdj3eAE",
#   "use": "enc",
#   "kid": "1"
# }
# 
# ---- JWK 1 ----
# { 
#   "kty": "RSA",
#   "n": "0vx7agoebGcQSuuPiLJXZptN9nndrQmbXEps2aiAFbWhM78LhWx4
# cbbfAAtVT86zwu1RK7aPFFxuhDR1L6tSoc_BJECPebWKRXjBZCiFV4n3oknjhMst
# n64tZ_2W-5JsGY4Hc5n9yBXArwl93lqt7_RN5w6Cf0h4QyQ5v-65YGjQR0_FDW2Q
# vzqY368QQMicAtaSqzs8KJZgnYb9c7d0zgdAZHzu6qMQvRL5hajrn1n91CbOpbIS
# D08qNLyrdkt-bFTWhAI4vMQFh6WeZu0fM4lFd2NcRwr3XPksINHaQ-G_xBniIqbw
# 0Ls1jF44-csFCur-kEgU8awapJzKnqDKgw",
#   "e": "AQAB",
#   "d": "X4cTteJY_gn4FYPsXB8rdXix5vwsg1FLN5E3EaG6RJoVH-HLLKD9
# M7dx5oo7GURknchnrRweUkC7hT5fJLM0WbFAKNLWY2vv7B6NqXSzUvxT0_YSfqij
# wp3RTzlBaCxWp4doFk5N2o8Gy_nHNKroADIkJ46pRUohsXywbReAdYaMwFs9tv8d
# _cPVY3i07a3t8MN6TNwm0dSawm9v47UiCl3Sk5ZiG7xojPLu4sbg1U2jx4IBTNBz
# nbJSzFHK66jT8bgkuqsk0GjskDJk19Z4qwjwbsnn4j2WBii3RL-Us2lGVkY8fkFz
# me1z0HbIkfz0Y6mqnOYtqc0X4jfcKoAC8Q",
#   "p": "83i-7IvMGXoMXCskv73TKr8637FiO7Z27zv8oj6pbWUQyLPQBQxtPV
# nwD20R-60eTDmD2ujnMt5PoqMrm8RfmNhVWDtjjMmCMjOpSXicFHj7XOuVIYQyqV
# WlWEh6dN36GVZYk93N8Bc9vY41xy8B9RzzOGVQzXvNEvn7O0nVbfs",
#   "q": "3dfOR9cuYq-0S-mkFLzgItgMEfFzB2q3hWehMuG0oCuqnb3vobLyum
# qjVZQO1dIrdwgTnCdpYzBcOfW5r370AFXjiWft_NGEiovonizhKpo9VVS78TzFgx
# kIdrecRezsZ-1kYd_s1qDbxtkDEgfAITAG9LUnADun4vIcb6yelxk",
#   "dp": "G4sPXkc6Ya9y8oJW9_ILj4xuppu0lzi_H7VTkS8xj5SdX3coE0oim
# YwxIi2emTAue0UOa5dpgFGyBJ4c8tQ2VF402XRugKDTP8akYhFo5tAA77Qe_Nmtu
# YZc3C3m3I24G2GvR5sSDxUyAN2zq8Lfn9EUms6rY3Ob8YeiKkTiBj0",
#   "dq": "s9lAH9fggBsoFR8Oac2R_E2gw282rT2kGOAhvIllETE1efrA6huUU
# vMfBcMpn8lqeW6vzznYY5SSQF7pMdC_agI3nG8Ibp1BUb0JUiraRNqUfLhcQb_d9
# GF4Dh7e74WbRsobRonujTYN1xCaP6TO61jvWrX-L18txXw494Q_cgk",
#   "qi": "GyM_p6JrXySiz1toFgKbWV-JdI3jQ4ypu9rbMWx3rQJBfmt0FoYzg
# UIZEVFEcOqwemRN81zoDAaa-Bk0KWNGDjJHZDdDmFhW3AN7lI-puxk_mHZGJ11rx
# yR8O55XLSe3SPmRfKwZI6yU24ZxvQKFYItdldUKGzO6Ia6zTKhAVRU",
#   "alg": "RS256",
#   "kid": "2011-04-29"
# }
# 
# ---- JWK 2 ----
# { 
#   "kty": "oct",
#   "alg": "A128KW",
#   "k": "GawgguFyGrWKav7AX4VKUg",
#   "kid": "AES KEK"
# }
# 
# ---- JWK 3 ----
# { 
#   "kty": "oct",
#   "k": "AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75
# aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow",
#   "kid": "HMAC key used in JWS spec Appendix A.1 example"
# }
#