crypto stuff and remove source for cargo (no rustup)

Signed-off-by: PlexSheep <software@cscherr.de>

.zshrc

@@ -285,8 +285,6 @@ export PYENV_ROOT="$HOME/.pyenv"
 [[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"
 eval "$(pyenv init -)"
 
-. "$HOME/.cargo/env"
-
 zstyle ':completion:*' menu select
 fpath+=~/.zfunc
 
@@ -309,16 +307,39 @@ function load_nvm() {
 export IDENTITY="Christoph J. Scherr <software@cscherr.de>"
 export KEY_TYPE=ed25519
 export KEYID=0E777B31ACC5B69B7096C050A466E5C5D6792EE9
-gpgencrypt () {
-  output="${1}".$(date +%s).enc
-  gpg --encrypt --armor --output ${output} \
-    -r $KEYID "${1}" && echo "${1} -> ${output}"
+gpgencrypt() {
+    # Encrypt with progress indicator
+    gpg --encrypt --armor \
+		--sign \
+        -r "${KEYID}" $@
 }
 
-gpgdecrypt () {
-  output=$(echo "${1}" | rev | cut -c16- | rev)
-  gpg --decrypt --output ${output} "${1}" && \
-    echo "${1} -> ${output}"
+gpgsign() {
+    local input="${1:--}"  # Default to stdin if no argument
+    if [[ "${input}" != "-" ]] && [[ ! -f "${input}" ]]; then
+        echo "Error: Input file '${input}' not found"
+        return 1
+    fi
+    gpg --clearsign --default-key "${KEYID}" "${input}"
+}
+
+gpgverify() {
+    local input="${1:--}"  # Default to stdin if no argument
+    if [[ "${input}" != "-" ]] && [[ ! -f "${input}" ]]; then
+        echo "Error: Input file '${input}' not found"
+        return 1
+	fi
+    gpg --verify "${input}"
+}
+
+# Git signing convenience function
+gcsign() {
+    git commit --amend --gpg-sign="${KEYID}" --allow-empty --signoff
+}
+
+gpgexport() {
+    # Export public key
+    gpg --armor --export "${KEYID}" > "${1:-public_key.asc}"
 }
 
 ### load unversioned zsh code