Openssl Generate Key And Self Signed Certificate
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Openssl Generate Key And Self Signed Certificate

Openssl Generate Self Signed Cert

Use openssl to create an x509 self-signed certificate authority (CA), certificate signing request (CSR), and resulting private key with IP SAN and DNS SAN
Openssl Generate Key And Self Signed Certificate
create-certs.sh

Openssl Generate Key And Self Signed Certificate Pdf

All necessary steps are executed by a single OpenSSL invocation: from private key generation up to the self-signed certificate. Remark #1: Crypto parameters Since the certificate is self-signed and needs to be accepted by users manually, it doesn't make sense to use a short expiration or weak cryptography. May 07, 2019  This is useful so you don't have to keep track of the password and/or use a script to sign self-signed SSL certificates. Openssl rsa -in myCA.key.withpwd -out myCA.key. Mdbg chinese reader license key generator. Convert the CA certificate from.PEM to.CRT format. Openssl x509 -outform der -in myCA.pem -out myCA.crt. You may get the following errors.

# Define where to store the generated certs and metadata.
DIR='$(pwd)/tls'
# Optional: Ensure the target directory exists and is empty.
rm -rf '${DIR}'
mkdir -p '${DIR}'
# Create the openssl configuration file. This is used for both generating
# the certificate as well as for specifying the extensions. It aims in favor
# of automation, so the DN is encoding and not prompted.
cat >'${DIR}/openssl.cnf'<<EOF
[req]
default_bits = 2048
encrypt_key = no # Change to encrypt the private key using des3 or similar
default_md = sha256
prompt = no
utf8 = yes
# Speify the DN here so we aren't prompted (along with prompt = no above).
distinguished_name = req_distinguished_name
# Extensions for SAN IP and SAN DNS
req_extensions = v3_req
# Be sure to update the subject to match your organization.
[req_distinguished_name]
C = US
ST = California
L = The Cloud
O = Demo
CN = My Certificate
# Allow client and server auth. You may want to only allow server auth.
# Link to SAN names.
[v3_req]
basicConstraints = CA:FALSE
subjectKeyIdentifier = hash
keyUsage = digitalSignature, keyEncipherment
extendedKeyUsage = clientAuth, serverAuth
subjectAltName = @alt_names
# Alternative names are specified as IP.# and DNS.# for IP addresses and
# DNS accordingly.
[alt_names]
IP.1 = 1.2.3.4
DNS.1 = my.dns.name
EOF
# Create the certificate authority (CA). This will be a self-signed CA, and this
# command generates both the private key and the certificate. You may want to
# adjust the number of bits (4096 is a bit more secure, but not supported in all
# places at the time of this publication).
#
# To put a password on the key, remove the -nodes option.
#
# Be sure to update the subject to match your organization.
openssl req
-new
-newkey rsa:2048
-days 120
-nodes
-x509
-subj '/C=US/ST=California/L=The Cloud/O=My Company CA'
-keyout '${DIR}/ca.key'
-out '${DIR}/ca.crt'
#
# For each server/service you want to secure with your CA, repeat the
# following steps:
#
# Generate the private key for the service. Again, you may want to increase
# the bits to 4096.
openssl genrsa -out '${DIR}/my-service.key' 2048
# Generate a CSR using the configuration and the key just generated. We will
# give this CSR to our CA to sign.
openssl req
-new -key '${DIR}/my-service.key'
-out '${DIR}/my-service.csr'
-config '${DIR}/openssl.cnf'
# Sign the CSR with our CA. This will generate a new certificate that is signed
# by our CA.
openssl x509
-req
-days 120
-in '${DIR}/my-service.csr'
-CA '${DIR}/ca.crt'
-CAkey '${DIR}/ca.key'
-CAcreateserial
-extensions v3_req
-extfile '${DIR}/openssl.cnf'
-out '${DIR}/my-service.crt'
# (Optional) Verify the certificate.
openssl x509 -in '${DIR}/my-service.crt' -noout -text
# Here is a sample response (truncate):
#
# Certificate:
# Signature Algorithm: sha256WithRSAEncryption
# Issuer: C = US, ST = California, L = The Cloud, O = My Organization CA
# Subject: C = US, ST = California, L = The Cloud, O = Demo, CN = My Certificate
# # ..
# X509v3 extensions:
# X509v3 Basic Constraints:
# CA:FALSE
# X509v3 Subject Key Identifier:
# 36:7E:F0:3D:93:C6:ED:02:22:A9:3D:FF:18:B6:63:5F:20:52:6E:2E
# X509v3 Key Usage:
# Digital Signature, Key Encipherment
# X509v3 Extended Key Usage:
# TLS Web Client Authentication, TLS Web Server Authentication
# X509v3 Subject Alternative Name:
# IP Address:1.2.3.4, DNS:my.dns.name
#
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