wallet from private key

[dirtmcgirt]

Hello,

Enough to store the private keys only? (in a txt file, without wallet.dat)
Can I restore everything with only a private key? It is enough to make a wallet?

[n00k13]

Hello,

Enough to store the private keys only? (in a txt file, without wallet.dat)
Can I restore everything with only a private key? It is enough to make a wallet?

It is, and if you decide to make use of an txt file make
sure to encrypt the file or the entire folder.

Make sure to print that key and safe in a secure place as a backup.

Securing your wallet
https://en.bitcoin.it/wiki/Securing_your_wallet

Recommend tools:

Gpg4win
http://www.gpg4win.org/download.html

MD5 & SHA Checksum Utility
http://download.cnet.com/MD5-SHA-Checksum-Utility/3000-2092_4-10911445.html

TrueCrypt
http://www.truecrypt.org/downloads

[dirtmcgirt]

Ok, it is good. Thanks.

How can I generate a working private key manually? And how can I calculate the public key from it?

[DeathAndTaxes]

Ok, it is good. Thanks.

How can I generate a working private key manually? And how can I calculate the public key from it?

Manually as in by hand it is next to impossible.  The math in ECDSA is not trivial and any error would result in a permanent loss of funds.

You can however use http://bitaddress.org.  You can (and should) save the webpage and use it offline.  You can even created encrypted (password protected) paper wallets all ready to print (print two copies to put in different secure locations to avoid loss of key).

[dirtmcgirt]

thanks, this paper wallet is interesting.