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/* | |
Regresa el mensaje firmado con la clavePrivada pero codificado en base64 | |
*/ | |
func firmar(clavePrivadaComoCadena, mensaje string) (string, error) { | |
clavePrivada, err := ParseRsaPrivateKeyFromPemStr(clavePrivadaComoCadena) | |
if err != nil { | |
return "", err | |
} | |
sumaDeVerificacionDeMensaje, err := hashearMensaje(mensaje) | |
if err != nil { | |
return "", err | |
} | |
mensajeFirmado, err := rsa.SignPSS(rand.Reader, clavePrivada, crypto.SHA256, sumaDeVerificacionDeMensaje, nil) | |
if err != nil { | |
return "", err | |
} | |
mensajeFirmadoEnBase64, err := base64.StdEncoding.EncodeToString(mensajeFirmado), nil | |
return mensajeFirmadoEnBase64, err | |
} |
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