Setup SSH key and agent for travis user.

.travis.yml

@@ -20,6 +20,7 @@ env:
 before_install: true
 
 install:
+  - eval `ssh-agent -s`
   - travis/setup-secure-shell.sh
   - sh -c "if [ '$TRAVIS_PHP_VERSION' != 'hhvm' ]; then travis/install-php-extensions.sh; fi"
   - sh -c "if [ '$TRAVIS_PHP_VERSION' != '5.2' ]; then travis/setup-composer.sh; fi"

travis/setup-secure-shell.sh

@@ -13,5 +13,19 @@ set -x
 USERNAME='phpseclib'
 PASSWORD='EePoov8po1aethu2kied1ne0'
 
+# Create phpseclib user and home directory
 sudo useradd --create-home --base-dir /home "$USERNAME"
+
+# Set phpseclib user password
 echo "$USERNAME:$PASSWORD" | sudo chpasswd
+
+# Create a 1024 bit RSA SSH key pair without passphrase for the travis user
+ssh-keygen -t rsa -b 1024 -f "$HOME/.ssh/id_rsa" -q -N ""
+
+# Add the generated private key to SSH agent of travis user
+ssh-add "$HOME/.ssh/id_rsa"
+
+# Allow the private key of the travis user to log in as phpseclib user
+sudo mkdir -p "/home/$USERNAME/.ssh/"
+sudo cp "$HOME/.ssh/id_rsa.pub" "/home/$USERNAME/.ssh/authorized_keys"
+sudo chown "$USERNAME:$USERNAME" "/home/$USERNAME/.ssh/" -R