CodeSampleX

Ejemplo

github.com/caddyserver/certmagic v0.25.3

Muestra verificada para golang github.com/caddyserver/certmagic v0.25.3. El contrato se ejecutó en go 1.26 · linux alpine/x64 · docker y pasó.

sha256:d1b32c14dcc3e387dfcaab87809f9894fd8fdb15a5540f1e42a2460fb938caa0

Esta red ofrece una sola cosa: una muestra que compila. La ejecutó en un sandbox y guardó el recibo firmado. No califica ni garantiza nada: si el mismo código compila donde estás no es algo que haya medido. Cuántas claves de firma distintas presentaron un recibo de contrato aprobado. Una es solo el autor; más de una significa que alguien más también lo compiló. Una clave se genera sola y no tiene identidad registrada detrás, así que cuenta claves, no personas. MIT-0

Evidencia de ejecución

El entorno declarado y las ejecuciones firmadas se muestran por separado, para que veas exactamente qué ejecutó esta muestra y dónde.

Base de evidencia
Contrato firmado aprobado
Recibos de verificación
1
Claves de firma que lo compilaron
1
Entorno declarado linux 24 · ubuntu · glibc 2.39 x64 go

Entornos de las ejecuciones de verificación

Entorno Contrato Etapas Ejecución
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f…
2026-08-28

Caso

HOW
Objetivo
verify pkg:golang/github.com/caddyserver/certmagic@v0.25.3
Paquetes
Creado
2026-08-28T02:04:59Z

Contrato

  1. certmagic.NewDefault returns a valid Config with default cache and TLS configuration
  2. certmagic.MatchWildcard correctly matches single-level subdomains case-insensitively and rejects multi-level subdomains or apex domains
  3. certmagic.SubjectQualifiesForCert validates domain formatting and rejects empty string or leading/trailing dots
  4. certmagic.SubjectQualifiesForPublicCert permits public domain names and single wildcards while rejecting localhost and private/loopback IP addresses
  5. certmagic.SubjectIsIP identifies IP addresses and SubjectIsInternal identifies loopback and private networks
  6. certmagic.StorageKeys generates sanitized and deterministic storage keys for certs and private keys
  7. certmagic.StandardKeyGenerator generates valid ed25519 private keys that can be PEM encoded and decoded
  8. certmagic.LooksLikeHTTPChallenge detects ACME HTTP-01 challenge paths and ignores normal paths
  9. certmagic.New initializes a Config using a custom Cache and preserves custom configuration fields

Archivos

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • main.go
  • spec.json
  • test/contract.go

Descargar el artefacto de código fuente (tar.gz)

Código fuente

PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:golang/github.com/caddyserver/certmagic@v0.25.3
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/github.com/caddyserver/certmagic@v0.25.3

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:58d98066c9002785cae7ffcfd4a05436a1b8aa6c7cc489ce1cba2c0aba83f5eb","contract":["certmagic.NewDefault returns a valid Config with default cache and TLS configuration","certmagic.MatchWildcard correctly matches single-level subdomains case-insensitively and rejects multi-level subdomains or apex domains","certmagic.SubjectQualifiesForCert validates domain formatting and rejects empty string or leading/trailing dots","certmagic.SubjectQualifiesForPublicCert permits public domain names and single wildcards while rejecting localhost and private/loopback IP addresses","certmagic.SubjectIsIP identifies IP addresses and SubjectIsInternal identifies loopback and private networks","certmagic.StorageKeys generates sanitized and deterministic storage keys for certs and private keys","certmagic.StandardKeyGenerator generates valid ed25519 private keys that can be PEM encoded and decoded","certmagic.LooksLikeHTTPChallenge detects ACME HTTP-01 challenge paths and ignores normal paths","certmagic.New initializes a Config using a custom Cache and preserves custom configuration fields"],"goal":"verify pkg:golang/github.com/caddyserver/certmagic@v0.25.3","kind":"HOW","packages":["pkg:golang/github.com/caddyserver/certmagic@v0.25.3"],"schemaVersion":1},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/github.com/caddyserver/certmagic@v0.25.3"],"schemaVersion":1,"subject":"pkg:golang/github.com/caddyserver/certmagic@v0.25.3","verifierAdapter":"golang@1"}
go.mod
module example.com/sample

go 1.26.6

require github.com/caddyserver/certmagic v0.25.3

require (
	github.com/caddyserver/zerossl v0.1.5 // indirect
	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
	github.com/libdns/libdns v1.1.1 // indirect
	github.com/mholt/acmez/v3 v3.1.6 // indirect
	github.com/miekg/dns v1.1.72 // indirect
	github.com/zeebo/blake3 v0.2.4 // indirect
	go.uber.org/multierr v1.11.0 // indirect
	go.uber.org/zap v1.27.1 // indirect
	go.uber.org/zap/exp v0.3.0 // indirect
	golang.org/x/crypto v0.50.0 // indirect
	golang.org/x/mod v0.35.0 // indirect
	golang.org/x/net v0.53.0 // indirect
	golang.org/x/sync v0.20.0 // indirect
	golang.org/x/sys v0.43.0 // indirect
	golang.org/x/text v0.36.0 // indirect
	golang.org/x/tools v0.44.0 // indirect
)
go.sum
code.pfad.fr/check v1.1.0 h1:GWvjdzhSEgHvEHe2uJujDcpmZoySKuHQNrZMfzfO0bE=
code.pfad.fr/check v1.1.0/go.mod h1:NiUH13DtYsb7xp5wll0U4SXx7KhXQVCtRgdC96IPfoM=
github.com/caddyserver/certmagic v0.25.3 h1:mGf5ba8F7xA4c5jfDZZbK2buY1VEkbnwpMDixaju94A=
github.com/caddyserver/certmagic v0.25.3/go.mod h1:YVs43D5+H/Dckt4bTga1KSO/xYfFBfVZainGDywYPAA=
github.com/caddyserver/zerossl v0.1.5 h1:dkvOjBAEEtY6LIGAHei7sw2UgqSD6TrWweXpV7lvEvE=
github.com/caddyserver/zerossl v0.1.5/go.mod h1:CxA0acn7oEGO6//4rtrRjYgEoa4MFw/XofZnrYwGqG4=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-jose/go-jose/v4 v4.1.3 h1:CVLmWDhDVRa6Mi/IgCgaopNosCaHz7zrMeF9MlZRkrs=
github.com/go-jose/go-jose/v4 v4.1.3/go.mod h1:x4oUasVrzR7071A4TnHLGSPpNOm2a21K9Kf04k1rs08=
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/klauspost/cpuid/v2 v2.3.0 h1:S4CRMLnYUhGeDFDqkGriYKdfoFlDnMtqTiI/sFzhA9Y=
github.com/klauspost/cpuid/v2 v2.3.0/go.mod h1:hqwkgyIinND0mEev00jJYCxPNVRVXFQeu1XKlok6oO0=
github.com/letsencrypt/challtestsrv v1.4.2 h1:0ON3ldMhZyWlfVNYYpFuWRTmZNnyfiL9Hh5YzC3JVwU=
github.com/letsencrypt/challtestsrv v1.4.2/go.mod h1:GhqMqcSoeGpYd5zX5TgwA6er/1MbWzx/o7yuuVya+Wk=
github.com/letsencrypt/pebble/v2 v2.10.0 h1:Wq6gYXlsY6ubqI3hhxsTzdyotvfdjFBxuwYqCLCnj/U=
github.com/letsencrypt/pebble/v2 v2.10.0/go.mod h1:Sk8cmUIPcIdv2nINo+9PB4L+ZBhzY+F9A1a/h/xmWiQ=
github.com/libdns/libdns v1.1.1 h1:wPrHrXILoSHKWJKGd0EiAVmiJbFShguILTg9leS/P/U=
github.com/libdns/libdns v1.1.1/go.mod h1:4Bj9+5CQiNMVGf87wjX4CY3HQJypUHRuLvlsfsZqLWQ=
github.com/mholt/acmez/v3 v3.1.6 h1:eGVQNObP0pBN4sxqrXeg7MYqTOWyoiYpQqITVWlrevk=
github.com/mholt/acmez/v3 v3.1.6/go.mod h1:5nTPosTGosLxF3+LU4ygbgMRFDhbAVpqMI4+a4aHLBY=
github.com/miekg/dns v1.1.72 h1:vhmr+TF2A3tuoGNkLDFK9zi36F2LS+hKTRW0Uf8kbzI=
github.com/miekg/dns v1.1.72/go.mod h1:+EuEPhdHOsfk6Wk5TT2CzssZdqkmFhf8r+aVyDEToIs=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
github.com/zeebo/assert v1.1.0 h1:hU1L1vLTHsnO8x8c9KAR5GmM5QscxHg5RNU5z5qbUWY=
github.com/zeebo/assert v1.1.0/go.mod h1:Pq9JiuJQpG8JLJdtkwrJESF0Foym2/D9XMU5ciN/wJ0=
github.com/zeebo/blake3 v0.2.4 h1:KYQPkhpRtcqh0ssGYcKLG1JYvddkEA8QwCM/yBqhaZI=
github.com/zeebo/blake3 v0.2.4/go.mod h1:7eeQ6d2iXWRGF6npfaxl2CU+xy2Fjo2gxeyZGCRUjcE=
github.com/zeebo/pcg v1.0.1 h1:lyqfGeWiv4ahac6ttHs+I5hwtH/+1mrhlCtVNQM2kHo=
github.com/zeebo/pcg v1.0.1/go.mod h1:09F0S9iiKrwn9rlI5yjLkmrug154/YRW6KnnXVDM/l4=
go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
go.uber.org/zap v1.27.1 h1:08RqriUEv8+ArZRYSTXy1LeBScaMpVSTBhCeaZYfMYc=
go.uber.org/zap v1.27.1/go.mod h1:GB2qFLM7cTU87MWRP2mPIjqfIDnGu+VIO4V/SdhGo2E=
go.uber.org/zap/exp v0.3.0 h1:6JYzdifzYkGmTdRR59oYH+Ng7k49H9qVpWwNSsGJj3U=
go.uber.org/zap/exp v0.3.0/go.mod h1:5I384qq7XGxYyByIhHm6jg5CHkGY0nsTfbDLgDDlgJQ=
golang.org/x/crypto v0.50.0 h1:zO47/JPrL6vsNkINmLoo/PH1gcxpls50DNogFvB5ZGI=
golang.org/x/crypto v0.50.0/go.mod h1:3muZ7vA7PBCE6xgPX7nkzzjiUq87kRItoJQM1Yo8S+Q=
golang.org/x/mod v0.35.0 h1:Ww1D637e6Pg+Zb2KrWfHQUnH2dQRLBQyAtpr/haaJeM=
golang.org/x/mod v0.35.0/go.mod h1:+GwiRhIInF8wPm+4AoT6L0FA1QWAad3OMdTRx4tFYlU=
golang.org/x/net v0.53.0 h1:d+qAbo5L0orcWAr0a9JweQpjXF19LMXJE8Ey7hwOdUA=
golang.org/x/net v0.53.0/go.mod h1:JvMuJH7rrdiCfbeHoo3fCQU24Lf5JJwT9W3sJFulfgs=
golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
golang.org/x/sys v0.43.0 h1:Rlag2XtaFTxp19wS8MXlJwTvoh8ArU6ezoyFsMyCTNI=
golang.org/x/sys v0.43.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
golang.org/x/text v0.36.0 h1:JfKh3XmcRPqZPKevfXVpI1wXPTqbkE5f7JA92a55Yxg=
golang.org/x/text v0.36.0/go.mod h1:NIdBknypM8iqVmPiuco0Dh6P5Jcdk8lJL0CUebqK164=
golang.org/x/tools v0.44.0 h1:UP4ajHPIcuMjT1GqzDWRlalUEoY+uzoZKnhOjbIPD2c=
golang.org/x/tools v0.44.0/go.mod h1:KA0AfVErSdxRZIsOVipbv3rQhVXTnlU6UhKxHd1seDI=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
main.go
package main

import (
	"fmt"
	"log"

	"github.com/caddyserver/certmagic"
)

func main() {
	// 1. Initialize default CertMagic configuration
	cfg := certmagic.NewDefault()
	tlsConfig := cfg.TLSConfig()
	fmt.Printf("Initialized default CertMagic config (TLS configured: %v)\n", tlsConfig != nil)

	// 2. Generate and encode a private key using StandardKeyGenerator
	keyGen := certmagic.StandardKeyGenerator{KeyType: certmagic.ED25519}
	privKey, err := keyGen.GenerateKey()
	if err != nil {
		log.Fatalf("Failed to generate private key: %v", err)
	}

	pemBytes, err := certmagic.PEMEncodePrivateKey(privKey)
	if err != nil {
		log.Fatalf("Failed to PEM-encode key: %v", err)
	}

	signer, err := certmagic.PEMDecodePrivateKey(pemBytes)
	if err != nil {
		log.Fatalf("Failed to PEM-decode key: %v", err)
	}
	fmt.Printf("Generated and decoded ED25519 signer: %T\n", signer)

	// 3. Evaluate domain qualification and wildcard matching
	domains := []string{"example.com", "sub.example.com", "localhost", "192.168.1.1"}
	for _, domain := range domains {
		qualifies := certmagic.SubjectQualifiesForPublicCert(domain)
		matchesWildcard := certmagic.MatchWildcard(domain, "*.example.com")
		fmt.Printf("Domain: %s -> Qualifies: %v, Matches Wildcard (*.example.com): %v\n", domain, qualifies, matchesWildcard)
	}

	// 4. Derive storage key names
	certStorageKey := certmagic.StorageKeys.SiteCert("acme", "example.com")
	fmt.Printf("Storage key for site certificate: %s\n", certStorageKey)
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:golang/github.com/caddyserver/certmagic@v0.25.3",
  "kind": "HOW",
  "packages": [
    "pkg:golang/github.com/caddyserver/certmagic@v0.25.3"
  ]
}
test/contract.go
package main

import (
	"context"
	"crypto/ed25519"
	"fmt"
	"net/http"
	"os"

	"github.com/caddyserver/certmagic"
)

func main() {
	// 1. certmagic.NewDefault returns a valid Config with default cache and TLS configuration
	cfg := certmagic.NewDefault()
	if cfg == nil {
		fmt.Fprintf(os.Stderr, "certmagic.NewDefault returned nil\n")
		os.Exit(1)
	}
	tlsCfg := cfg.TLSConfig()
	if tlsCfg == nil || tlsCfg.GetCertificate == nil {
		fmt.Fprintf(os.Stderr, "certmagic.NewDefault().TLSConfig() or GetCertificate is nil\n")
		os.Exit(1)
	}

	// 2. certmagic.MatchWildcard correctly matches single-level subdomains case-insensitively and rejects multi-level subdomains or apex domains
	if !certmagic.MatchWildcard("sub.example.com", "*.example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.MatchWildcard failed for valid single-level subdomain\n")
		os.Exit(1)
	}
	if !certmagic.MatchWildcard("SUB.EXAMPLE.COM", "*.example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.MatchWildcard failed for case-insensitive match\n")
		os.Exit(1)
	}
	if certmagic.MatchWildcard("nested.sub.example.com", "*.example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.MatchWildcard unexpectedly matched nested subdomain\n")
		os.Exit(1)
	}
	if certmagic.MatchWildcard("example.com", "*.example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.MatchWildcard unexpectedly matched apex domain\n")
		os.Exit(1)
	}

	// 3. certmagic.SubjectQualifiesForCert validates domain formatting and rejects empty string or leading/trailing dots
	if !certmagic.SubjectQualifiesForCert("example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectQualifiesForCert failed for valid domain\n")
		os.Exit(1)
	}
	if certmagic.SubjectQualifiesForCert(".example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectQualifiesForCert unexpectedly accepted leading dot\n")
		os.Exit(1)
	}
	if certmagic.SubjectQualifiesForCert("example.com.") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectQualifiesForCert unexpectedly accepted trailing dot\n")
		os.Exit(1)
	}
	if certmagic.SubjectQualifiesForCert("") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectQualifiesForCert unexpectedly accepted empty domain\n")
		os.Exit(1)
	}

	// 4. certmagic.SubjectQualifiesForPublicCert permits public domain names and single wildcards while rejecting localhost and private/loopback IP addresses
	if !certmagic.SubjectQualifiesForPublicCert("example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectQualifiesForPublicCert failed for public domain\n")
		os.Exit(1)
	}
	if !certmagic.SubjectQualifiesForPublicCert("*.example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectQualifiesForPublicCert failed for valid wildcard\n")
		os.Exit(1)
	}
	if certmagic.SubjectQualifiesForPublicCert("localhost") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectQualifiesForPublicCert unexpectedly accepted localhost\n")
		os.Exit(1)
	}
	if certmagic.SubjectQualifiesForPublicCert("127.0.0.1") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectQualifiesForPublicCert unexpectedly accepted loopback IP\n")
		os.Exit(1)
	}
	if certmagic.SubjectQualifiesForPublicCert("192.168.1.1") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectQualifiesForPublicCert unexpectedly accepted private IP\n")
		os.Exit(1)
	}
	if certmagic.SubjectQualifiesForPublicCert("*.*.example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectQualifiesForPublicCert unexpectedly accepted multi-level wildcard\n")
		os.Exit(1)
	}

	// 5. certmagic.SubjectIsIP identifies IP addresses and SubjectIsInternal identifies loopback and private networks
	if !certmagic.SubjectIsIP("192.168.1.1") || !certmagic.SubjectIsIP("::1") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectIsIP failed for IPv4/IPv6 address\n")
		os.Exit(1)
	}
	if certmagic.SubjectIsIP("example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectIsIP returned true for domain name\n")
		os.Exit(1)
	}
	if !certmagic.SubjectIsInternal("localhost") || !certmagic.SubjectIsInternal("10.0.0.1") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectIsInternal failed for internal host/IP\n")
		os.Exit(1)
	}
	if certmagic.SubjectIsInternal("example.com") {
		fmt.Fprintf(os.Stderr, "certmagic.SubjectIsInternal returned true for public domain\n")
		os.Exit(1)
	}

	// 6. certmagic.StorageKeys generates sanitized and deterministic storage keys for certs and private keys
	siteCertKey := certmagic.StorageKeys.SiteCert("acme", "example.com")
	if siteCertKey != "certificates/acme/example.com/example.com.crt" {
		fmt.Fprintf(os.Stderr, "certmagic.StorageKeys.SiteCert returned unexpected key: %s\n", siteCertKey)
		os.Exit(1)
	}
	siteKeyKey := certmagic.StorageKeys.SitePrivateKey("acme", "example.com")
	if siteKeyKey != "certificates/acme/example.com/example.com.key" {
		fmt.Fprintf(os.Stderr, "certmagic.StorageKeys.SitePrivateKey returned unexpected key: %s\n", siteKeyKey)
		os.Exit(1)
	}
	safeStr := certmagic.StorageKeys.Safe("foo/bar:baz")
	if safeStr == "" || safeStr == "foo/bar:baz" {
		fmt.Fprintf(os.Stderr, "certmagic.StorageKeys.Safe failed to sanitize special characters: %s\n", safeStr)
		os.Exit(1)
	}

	// 7. certmagic.StandardKeyGenerator generates valid ed25519 private keys that can be PEM encoded and decoded
	kg := certmagic.StandardKeyGenerator{KeyType: certmagic.ED25519}
	privKey, err := kg.GenerateKey()
	if err != nil {
		fmt.Fprintf(os.Stderr, "certmagic.StandardKeyGenerator.GenerateKey failed: %v\n", err)
		os.Exit(1)
	}
	if _, ok := privKey.(ed25519.PrivateKey); !ok {
		fmt.Fprintf(os.Stderr, "Generated key is not ed25519.PrivateKey: %T\n", privKey)
		os.Exit(1)
	}
	pemBytes, err := certmagic.PEMEncodePrivateKey(privKey)
	if err != nil {
		fmt.Fprintf(os.Stderr, "certmagic.PEMEncodePrivateKey failed: %v\n", err)
		os.Exit(1)
	}
	decodedSigner, err := certmagic.PEMDecodePrivateKey(pemBytes)
	if err != nil {
		fmt.Fprintf(os.Stderr, "certmagic.PEMDecodePrivateKey failed: %v\n", err)
		os.Exit(1)
	}
	if decodedSigner == nil {
		fmt.Fprintf(os.Stderr, "certmagic.PEMDecodePrivateKey returned nil signer\n")
		os.Exit(1)
	}

	// 8. certmagic.LooksLikeHTTPChallenge detects ACME HTTP-01 challenge paths and ignores normal paths
	reqChallenge, _ := http.NewRequestWithContext(context.Background(), "GET", "http://example.com/.well-known/acme-challenge/token123", nil)
	if !certmagic.LooksLikeHTTPChallenge(reqChallenge) {
		fmt.Fprintf(os.Stderr, "certmagic.LooksLikeHTTPChallenge returned false for ACME challenge URL\n")
		os.Exit(1)
	}
	reqNormal, _ := http.NewRequestWithContext(context.Background(), "GET", "http://example.com/index.html", nil)
	if certmagic.LooksLikeHTTPChallenge(reqNormal) {
		fmt.Fprintf(os.Stderr, "certmagic.LooksLikeHTTPChallenge returned true for normal URL\n")
		os.Exit(1)
	}

	// 9. certmagic.New initializes a Config using a custom Cache and preserves custom configuration fields
	var customCache *certmagic.Cache
	customCache = certmagic.NewCache(certmagic.CacheOptions{
		GetConfigForCert: func(cert certmagic.Certificate) (*certmagic.Config, error) {
			return certmagic.New(customCache, certmagic.Config{}), nil
		},
	})
	defer customCache.Stop()
	customCfg := certmagic.New(customCache, certmagic.Config{
		DefaultServerName: "example.com",
	})
	if customCfg == nil {
		fmt.Fprintf(os.Stderr, "certmagic.New with custom cache returned nil\n")
		os.Exit(1)
	}
	if customCfg.DefaultServerName != "example.com" {
		fmt.Fprintf(os.Stderr, "certmagic.Config DefaultServerName mismatch: got %s, want example.com\n", customCfg.DefaultServerName)
		os.Exit(1)
	}

	fmt.Println("All certmagic contract assertions passed.")
}

Seeder de origen

anónimo